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linux/drivers/net/wireless/b43/main.c
Michael Buesch 8ed7fc48eb b43: Fix ofdmtab write regression 
commit f04b3787bbce4567e28069a9ec97dcd804626ac7 introduced
a regression for the ofdmtable writing.

It incorrectly removed the writing of the high 16bits for
a 32bit table write and initialized the direction identifier
too late.

This patch does also some cleanups to make the code much more
readable and adds a few comments, so non rocket scientists are
also able to understand what this address caching is all about.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-01-28 15:05:58 -08:00

4113 lines
103 KiB
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/*
Broadcom B43 wireless driver
Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>
Copyright (c) 2005 Stefano Brivio <stefano.brivio@polimi.it>
Copyright (c) 2005, 2006 Michael Buesch <mb@bu3sch.de>
Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org>
Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
Some parts of the code in this file are derived from the ipw2200
driver Copyright(c) 2003 - 2004 Intel Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
#include <linux/version.h>
#include <linux/firmware.h>
#include <linux/wireless.h>
#include <linux/workqueue.h>
#include <linux/skbuff.h>
#include <linux/dma-mapping.h>
#include <asm/unaligned.h>
#include "b43.h"
#include "main.h"
#include "debugfs.h"
#include "phy.h"
#include "dma.h"
#include "pio.h"
#include "sysfs.h"
#include "xmit.h"
#include "lo.h"
#include "pcmcia.h"
MODULE_DESCRIPTION("Broadcom B43 wireless driver");
MODULE_AUTHOR("Martin Langer");
MODULE_AUTHOR("Stefano Brivio");
MODULE_AUTHOR("Michael Buesch");
MODULE_LICENSE("GPL");
extern char *nvram_get(char *name);
#if defined(CONFIG_B43_DMA) && defined(CONFIG_B43_PIO)
static int modparam_pio;
module_param_named(pio, modparam_pio, int, 0444);
MODULE_PARM_DESC(pio, "enable(1) / disable(0) PIO mode");
#elif defined(CONFIG_B43_DMA)
# define modparam_pio 0
#elif defined(CONFIG_B43_PIO)
# define modparam_pio 1
#endif
static int modparam_bad_frames_preempt;
module_param_named(bad_frames_preempt, modparam_bad_frames_preempt, int, 0444);
MODULE_PARM_DESC(bad_frames_preempt,
"enable(1) / disable(0) Bad Frames Preemption");
static char modparam_fwpostfix[16];
module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
static int modparam_hwpctl;
module_param_named(hwpctl, modparam_hwpctl, int, 0444);
MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
static int modparam_nohwcrypt;
module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
static const struct ssb_device_id b43_ssb_tbl[] = {
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 5),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 6),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 7),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 9),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 10),
SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, 13),
SSB_DEVTABLE_END
};
MODULE_DEVICE_TABLE(ssb, b43_ssb_tbl);
/* Channel and ratetables are shared for all devices.
* They can't be const, because ieee80211 puts some precalculated
* data in there. This data is the same for all devices, so we don't
* get concurrency issues */
#define RATETAB_ENT(_rateid, _flags) \
{ \
.rate = B43_RATE_TO_BASE100KBPS(_rateid), \
.val = (_rateid), \
.val2 = (_rateid), \
.flags = (_flags), \
}
static struct ieee80211_rate __b43_ratetable[] = {
RATETAB_ENT(B43_CCK_RATE_1MB, IEEE80211_RATE_CCK),
RATETAB_ENT(B43_CCK_RATE_2MB, IEEE80211_RATE_CCK_2),
RATETAB_ENT(B43_CCK_RATE_5MB, IEEE80211_RATE_CCK_2),
RATETAB_ENT(B43_CCK_RATE_11MB, IEEE80211_RATE_CCK_2),
RATETAB_ENT(B43_OFDM_RATE_6MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_9MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_12MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_18MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_24MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_36MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_48MB, IEEE80211_RATE_OFDM),
RATETAB_ENT(B43_OFDM_RATE_54MB, IEEE80211_RATE_OFDM),
};
#define b43_a_ratetable (__b43_ratetable + 4)
#define b43_a_ratetable_size 8
#define b43_b_ratetable (__b43_ratetable + 0)
#define b43_b_ratetable_size 4
#define b43_g_ratetable (__b43_ratetable + 0)
#define b43_g_ratetable_size 12
#define CHANTAB_ENT(_chanid, _freq) \
{ \
.chan = (_chanid), \
.freq = (_freq), \
.val = (_chanid), \
.flag = IEEE80211_CHAN_W_SCAN | \
IEEE80211_CHAN_W_ACTIVE_SCAN | \
IEEE80211_CHAN_W_IBSS, \
.power_level = 0xFF, \
.antenna_max = 0xFF, \
}
static struct ieee80211_channel b43_bg_chantable[] = {
CHANTAB_ENT(1, 2412),
CHANTAB_ENT(2, 2417),
CHANTAB_ENT(3, 2422),
CHANTAB_ENT(4, 2427),
CHANTAB_ENT(5, 2432),
CHANTAB_ENT(6, 2437),
CHANTAB_ENT(7, 2442),
CHANTAB_ENT(8, 2447),
CHANTAB_ENT(9, 2452),
CHANTAB_ENT(10, 2457),
CHANTAB_ENT(11, 2462),
CHANTAB_ENT(12, 2467),
CHANTAB_ENT(13, 2472),
CHANTAB_ENT(14, 2484),
};
#define b43_bg_chantable_size ARRAY_SIZE(b43_bg_chantable)
static struct ieee80211_channel b43_a_chantable[] = {
CHANTAB_ENT(36, 5180),
CHANTAB_ENT(40, 5200),
CHANTAB_ENT(44, 5220),
CHANTAB_ENT(48, 5240),
CHANTAB_ENT(52, 5260),
CHANTAB_ENT(56, 5280),
CHANTAB_ENT(60, 5300),
CHANTAB_ENT(64, 5320),
CHANTAB_ENT(149, 5745),
CHANTAB_ENT(153, 5765),
CHANTAB_ENT(157, 5785),
CHANTAB_ENT(161, 5805),
CHANTAB_ENT(165, 5825),
};
#define b43_a_chantable_size ARRAY_SIZE(b43_a_chantable)
static void b43_wireless_core_exit(struct b43_wldev *dev);
static int b43_wireless_core_init(struct b43_wldev *dev);
static void b43_wireless_core_stop(struct b43_wldev *dev);
static int b43_wireless_core_start(struct b43_wldev *dev);
static int b43_ratelimit(struct b43_wl *wl)
{
if (!wl || !wl->current_dev)
return 1;
if (b43_status(wl->current_dev) < B43_STAT_STARTED)
return 1;
/* We are up and running.
* Ratelimit the messages to avoid DoS over the net. */
return net_ratelimit();
}
void b43info(struct b43_wl *wl, const char *fmt, ...)
{
va_list args;
if (!b43_ratelimit(wl))
return;
va_start(args, fmt);
printk(KERN_INFO "b43-%s: ",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
vprintk(fmt, args);
va_end(args);
}
void b43err(struct b43_wl *wl, const char *fmt, ...)
{
va_list args;
if (!b43_ratelimit(wl))
return;
va_start(args, fmt);
printk(KERN_ERR "b43-%s ERROR: ",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
vprintk(fmt, args);
va_end(args);
}
void b43warn(struct b43_wl *wl, const char *fmt, ...)
{
va_list args;
if (!b43_ratelimit(wl))
return;
va_start(args, fmt);
printk(KERN_WARNING "b43-%s warning: ",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
vprintk(fmt, args);
va_end(args);
}
#if B43_DEBUG
void b43dbg(struct b43_wl *wl, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
printk(KERN_DEBUG "b43-%s debug: ",
(wl && wl->hw) ? wiphy_name(wl->hw->wiphy) : "wlan");
vprintk(fmt, args);
va_end(args);
}
#endif /* DEBUG */
static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
{
u32 macctl;
B43_WARN_ON(offset % 4 != 0);
macctl = b43_read32(dev, B43_MMIO_MACCTL);
if (macctl & B43_MACCTL_BE)
val = swab32(val);
b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
mmiowb();
b43_write32(dev, B43_MMIO_RAM_DATA, val);
}
static inline
void b43_shm_control_word(struct b43_wldev *dev, u16 routing, u16 offset)
{
u32 control;
/* "offset" is the WORD offset. */
control = routing;
control <<= 16;
control |= offset;
b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
}
u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
{
u32 ret;
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
if (offset & 0x0003) {
/* Unaligned access */
b43_shm_control_word(dev, routing, offset >> 2);
ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
ret <<= 16;
b43_shm_control_word(dev, routing, (offset >> 2) + 1);
ret |= b43_read16(dev, B43_MMIO_SHM_DATA);
return ret;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
ret = b43_read32(dev, B43_MMIO_SHM_DATA);
return ret;
}
u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
{
u16 ret;
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
if (offset & 0x0003) {
/* Unaligned access */
b43_shm_control_word(dev, routing, offset >> 2);
ret = b43_read16(dev, B43_MMIO_SHM_DATA_UNALIGNED);
return ret;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
ret = b43_read16(dev, B43_MMIO_SHM_DATA);
return ret;
}
void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
{
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
if (offset & 0x0003) {
/* Unaligned access */
b43_shm_control_word(dev, routing, offset >> 2);
mmiowb();
b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED,
(value >> 16) & 0xffff);
mmiowb();
b43_shm_control_word(dev, routing, (offset >> 2) + 1);
mmiowb();
b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
return;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
mmiowb();
b43_write32(dev, B43_MMIO_SHM_DATA, value);
}
void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
{
if (routing == B43_SHM_SHARED) {
B43_WARN_ON(offset & 0x0001);
if (offset & 0x0003) {
/* Unaligned access */
b43_shm_control_word(dev, routing, offset >> 2);
mmiowb();
b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
return;
}
offset >>= 2;
}
b43_shm_control_word(dev, routing, offset);
mmiowb();
b43_write16(dev, B43_MMIO_SHM_DATA, value);
}
/* Read HostFlags */
u32 b43_hf_read(struct b43_wldev * dev)
{
u32 ret;
ret = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFHI);
ret <<= 16;
ret |= b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_HOSTFLO);
return ret;
}
/* Write HostFlags */
void b43_hf_write(struct b43_wldev *dev, u32 value)
{
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_HOSTFLO, (value & 0x0000FFFF));
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_HOSTFHI, ((value & 0xFFFF0000) >> 16));
}
void b43_tsf_read(struct b43_wldev *dev, u64 * tsf)
{
/* We need to be careful. As we read the TSF from multiple
* registers, we should take care of register overflows.
* In theory, the whole tsf read process should be atomic.
* We try to be atomic here, by restaring the read process,
* if any of the high registers changed (overflew).
*/
if (dev->dev->id.revision >= 3) {
u32 low, high, high2;
do {
high = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
low = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_LOW);
high2 = b43_read32(dev, B43_MMIO_REV3PLUS_TSF_HIGH);
} while (unlikely(high != high2));
*tsf = high;
*tsf <<= 32;
*tsf |= low;
} else {
u64 tmp;
u16 v0, v1, v2, v3;
u16 test1, test2, test3;
do {
v3 = b43_read16(dev, B43_MMIO_TSF_3);
v2 = b43_read16(dev, B43_MMIO_TSF_2);
v1 = b43_read16(dev, B43_MMIO_TSF_1);
v0 = b43_read16(dev, B43_MMIO_TSF_0);
test3 = b43_read16(dev, B43_MMIO_TSF_3);
test2 = b43_read16(dev, B43_MMIO_TSF_2);
test1 = b43_read16(dev, B43_MMIO_TSF_1);
} while (v3 != test3 || v2 != test2 || v1 != test1);
*tsf = v3;
*tsf <<= 48;
tmp = v2;
tmp <<= 32;
*tsf |= tmp;
tmp = v1;
tmp <<= 16;
*tsf |= tmp;
*tsf |= v0;
}
}
static void b43_time_lock(struct b43_wldev *dev)
{
u32 macctl;
macctl = b43_read32(dev, B43_MMIO_MACCTL);
macctl |= B43_MACCTL_TBTTHOLD;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
/* Commit the write */
b43_read32(dev, B43_MMIO_MACCTL);
}
static void b43_time_unlock(struct b43_wldev *dev)
{
u32 macctl;
macctl = b43_read32(dev, B43_MMIO_MACCTL);
macctl &= ~B43_MACCTL_TBTTHOLD;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
/* Commit the write */
b43_read32(dev, B43_MMIO_MACCTL);
}
static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
{
/* Be careful with the in-progress timer.
* First zero out the low register, so we have a full
* register-overflow duration to complete the operation.
*/
if (dev->dev->id.revision >= 3) {
u32 lo = (tsf & 0x00000000FFFFFFFFULL);
u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, 0);
mmiowb();
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, hi);
mmiowb();
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, lo);
} else {
u16 v0 = (tsf & 0x000000000000FFFFULL);
u16 v1 = (tsf & 0x00000000FFFF0000ULL) >> 16;
u16 v2 = (tsf & 0x0000FFFF00000000ULL) >> 32;
u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
b43_write16(dev, B43_MMIO_TSF_0, 0);
mmiowb();
b43_write16(dev, B43_MMIO_TSF_3, v3);
mmiowb();
b43_write16(dev, B43_MMIO_TSF_2, v2);
mmiowb();
b43_write16(dev, B43_MMIO_TSF_1, v1);
mmiowb();
b43_write16(dev, B43_MMIO_TSF_0, v0);
}
}
void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
{
b43_time_lock(dev);
b43_tsf_write_locked(dev, tsf);
b43_time_unlock(dev);
}
static
void b43_macfilter_set(struct b43_wldev *dev, u16 offset, const u8 * mac)
{
static const u8 zero_addr[ETH_ALEN] = { 0 };
u16 data;
if (!mac)
mac = zero_addr;
offset |= 0x0020;
b43_write16(dev, B43_MMIO_MACFILTER_CONTROL, offset);
data = mac[0];
data |= mac[1] << 8;
b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
data = mac[2];
data |= mac[3] << 8;
b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
data = mac[4];
data |= mac[5] << 8;
b43_write16(dev, B43_MMIO_MACFILTER_DATA, data);
}
static void b43_write_mac_bssid_templates(struct b43_wldev *dev)
{
const u8 *mac;
const u8 *bssid;
u8 mac_bssid[ETH_ALEN * 2];
int i;
u32 tmp;
bssid = dev->wl->bssid;
mac = dev->wl->mac_addr;
b43_macfilter_set(dev, B43_MACFILTER_BSSID, bssid);
memcpy(mac_bssid, mac, ETH_ALEN);
memcpy(mac_bssid + ETH_ALEN, bssid, ETH_ALEN);
/* Write our MAC address and BSSID to template ram */
for (i = 0; i < ARRAY_SIZE(mac_bssid); i += sizeof(u32)) {
tmp = (u32) (mac_bssid[i + 0]);
tmp |= (u32) (mac_bssid[i + 1]) << 8;
tmp |= (u32) (mac_bssid[i + 2]) << 16;
tmp |= (u32) (mac_bssid[i + 3]) << 24;
b43_ram_write(dev, 0x20 + i, tmp);
}
}
static void b43_upload_card_macaddress(struct b43_wldev *dev)
{
b43_write_mac_bssid_templates(dev);
b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
}
static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
{
/* slot_time is in usec. */
if (dev->phy.type != B43_PHYTYPE_G)
return;
b43_write16(dev, 0x684, 510 + slot_time);
b43_shm_write16(dev, B43_SHM_SHARED, 0x0010, slot_time);
}
static void b43_short_slot_timing_enable(struct b43_wldev *dev)
{
b43_set_slot_time(dev, 9);
dev->short_slot = 1;
}
static void b43_short_slot_timing_disable(struct b43_wldev *dev)
{
b43_set_slot_time(dev, 20);
dev->short_slot = 0;
}
/* Enable a Generic IRQ. "mask" is the mask of which IRQs to enable.
* Returns the _previously_ enabled IRQ mask.
*/
static inline u32 b43_interrupt_enable(struct b43_wldev *dev, u32 mask)
{
u32 old_mask;
old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask | mask);
return old_mask;
}
/* Disable a Generic IRQ. "mask" is the mask of which IRQs to disable.
* Returns the _previously_ enabled IRQ mask.
*/
static inline u32 b43_interrupt_disable(struct b43_wldev *dev, u32 mask)
{
u32 old_mask;
old_mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
b43_write32(dev, B43_MMIO_GEN_IRQ_MASK, old_mask & ~mask);
return old_mask;
}
/* Synchronize IRQ top- and bottom-half.
* IRQs must be masked before calling this.
* This must not be called with the irq_lock held.
*/
static void b43_synchronize_irq(struct b43_wldev *dev)
{
synchronize_irq(dev->dev->irq);
tasklet_kill(&dev->isr_tasklet);
}
/* DummyTransmission function, as documented on
* http://bcm-specs.sipsolutions.net/DummyTransmission
*/
void b43_dummy_transmission(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
unsigned int i, max_loop;
u16 value;
u32 buffer[5] = {
0x00000000,
0x00D40000,
0x00000000,
0x01000000,
0x00000000,
};
switch (phy->type) {
case B43_PHYTYPE_A:
max_loop = 0x1E;
buffer[0] = 0x000201CC;
break;
case B43_PHYTYPE_B:
case B43_PHYTYPE_G:
max_loop = 0xFA;
buffer[0] = 0x000B846E;
break;
default:
B43_WARN_ON(1);
return;
}
for (i = 0; i < 5; i++)
b43_ram_write(dev, i * 4, buffer[i]);
/* Commit writes */
b43_read32(dev, B43_MMIO_MACCTL);
b43_write16(dev, 0x0568, 0x0000);
b43_write16(dev, 0x07C0, 0x0000);
value = ((phy->type == B43_PHYTYPE_A) ? 1 : 0);
b43_write16(dev, 0x050C, value);
b43_write16(dev, 0x0508, 0x0000);
b43_write16(dev, 0x050A, 0x0000);
b43_write16(dev, 0x054C, 0x0000);
b43_write16(dev, 0x056A, 0x0014);
b43_write16(dev, 0x0568, 0x0826);
b43_write16(dev, 0x0500, 0x0000);
b43_write16(dev, 0x0502, 0x0030);
if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
b43_radio_write16(dev, 0x0051, 0x0017);
for (i = 0x00; i < max_loop; i++) {
value = b43_read16(dev, 0x050E);
if (value & 0x0080)
break;
udelay(10);
}
for (i = 0x00; i < 0x0A; i++) {
value = b43_read16(dev, 0x050E);
if (value & 0x0400)
break;
udelay(10);
}
for (i = 0x00; i < 0x0A; i++) {
value = b43_read16(dev, 0x0690);
if (!(value & 0x0100))
break;
udelay(10);
}
if (phy->radio_ver == 0x2050 && phy->radio_rev <= 0x5)
b43_radio_write16(dev, 0x0051, 0x0037);
}
static void key_write(struct b43_wldev *dev,
u8 index, u8 algorithm, const u8 * key)
{
unsigned int i;
u32 offset;
u16 value;
u16 kidx;
/* Key index/algo block */
kidx = b43_kidx_to_fw(dev, index);
value = ((kidx << 4) | algorithm);
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_KEYIDXBLOCK + (kidx * 2), value);
/* Write the key to the Key Table Pointer offset */
offset = dev->ktp + (index * B43_SEC_KEYSIZE);
for (i = 0; i < B43_SEC_KEYSIZE; i += 2) {
value = key[i];
value |= (u16) (key[i + 1]) << 8;
b43_shm_write16(dev, B43_SHM_SHARED, offset + i, value);
}
}
static void keymac_write(struct b43_wldev *dev, u8 index, const u8 * addr)
{
u32 addrtmp[2] = { 0, 0, };
u8 per_sta_keys_start = 8;
if (b43_new_kidx_api(dev))
per_sta_keys_start = 4;
B43_WARN_ON(index < per_sta_keys_start);
/* We have two default TX keys and possibly two default RX keys.
* Physical mac 0 is mapped to physical key 4 or 8, depending
* on the firmware version.
* So we must adjust the index here.
*/
index -= per_sta_keys_start;
if (addr) {
addrtmp[0] = addr[0];
addrtmp[0] |= ((u32) (addr[1]) << 8);
addrtmp[0] |= ((u32) (addr[2]) << 16);
addrtmp[0] |= ((u32) (addr[3]) << 24);
addrtmp[1] = addr[4];
addrtmp[1] |= ((u32) (addr[5]) << 8);
}
if (dev->dev->id.revision >= 5) {
/* Receive match transmitter address mechanism */
b43_shm_write32(dev, B43_SHM_RCMTA,
(index * 2) + 0, addrtmp[0]);
b43_shm_write16(dev, B43_SHM_RCMTA,
(index * 2) + 1, addrtmp[1]);
} else {
/* RXE (Receive Engine) and
* PSM (Programmable State Machine) mechanism
*/
if (index < 8) {
/* TODO write to RCM 16, 19, 22 and 25 */
} else {
b43_shm_write32(dev, B43_SHM_SHARED,
B43_SHM_SH_PSM + (index * 6) + 0,
addrtmp[0]);
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_PSM + (index * 6) + 4,
addrtmp[1]);
}
}
}
static void do_key_write(struct b43_wldev *dev,
u8 index, u8 algorithm,
const u8 * key, size_t key_len, const u8 * mac_addr)
{
u8 buf[B43_SEC_KEYSIZE] = { 0, };
u8 per_sta_keys_start = 8;
if (b43_new_kidx_api(dev))
per_sta_keys_start = 4;
B43_WARN_ON(index >= dev->max_nr_keys);
B43_WARN_ON(key_len > B43_SEC_KEYSIZE);
if (index >= per_sta_keys_start)
keymac_write(dev, index, NULL); /* First zero out mac. */
if (key)
memcpy(buf, key, key_len);
key_write(dev, index, algorithm, buf);
if (index >= per_sta_keys_start)
keymac_write(dev, index, mac_addr);
dev->key[index].algorithm = algorithm;
}
static int b43_key_write(struct b43_wldev *dev,
int index, u8 algorithm,
const u8 * key, size_t key_len,
const u8 * mac_addr,
struct ieee80211_key_conf *keyconf)
{
int i;
int sta_keys_start;
if (key_len > B43_SEC_KEYSIZE)
return -EINVAL;
for (i = 0; i < dev->max_nr_keys; i++) {
/* Check that we don't already have this key. */
B43_WARN_ON(dev->key[i].keyconf == keyconf);
}
if (index < 0) {
/* Either pairwise key or address is 00:00:00:00:00:00
* for transmit-only keys. Search the index. */
if (b43_new_kidx_api(dev))
sta_keys_start = 4;
else
sta_keys_start = 8;
for (i = sta_keys_start; i < dev->max_nr_keys; i++) {
if (!dev->key[i].keyconf) {
/* found empty */
index = i;
break;
}
}
if (index < 0) {
b43err(dev->wl, "Out of hardware key memory\n");
return -ENOSPC;
}
} else
B43_WARN_ON(index > 3);
do_key_write(dev, index, algorithm, key, key_len, mac_addr);
if ((index <= 3) && !b43_new_kidx_api(dev)) {
/* Default RX key */
B43_WARN_ON(mac_addr);
do_key_write(dev, index + 4, algorithm, key, key_len, NULL);
}
keyconf->hw_key_idx = index;
dev->key[index].keyconf = keyconf;
return 0;
}
static int b43_key_clear(struct b43_wldev *dev, int index)
{
if (B43_WARN_ON((index < 0) || (index >= dev->max_nr_keys)))
return -EINVAL;
do_key_write(dev, index, B43_SEC_ALGO_NONE,
NULL, B43_SEC_KEYSIZE, NULL);
if ((index <= 3) && !b43_new_kidx_api(dev)) {
do_key_write(dev, index + 4, B43_SEC_ALGO_NONE,
NULL, B43_SEC_KEYSIZE, NULL);
}
dev->key[index].keyconf = NULL;
return 0;
}
static void b43_clear_keys(struct b43_wldev *dev)
{
int i;
for (i = 0; i < dev->max_nr_keys; i++)
b43_key_clear(dev, i);
}
void b43_power_saving_ctl_bits(struct b43_wldev *dev, unsigned int ps_flags)
{
u32 macctl;
u16 ucstat;
bool hwps;
bool awake;
int i;
B43_WARN_ON((ps_flags & B43_PS_ENABLED) &&
(ps_flags & B43_PS_DISABLED));
B43_WARN_ON((ps_flags & B43_PS_AWAKE) && (ps_flags & B43_PS_ASLEEP));
if (ps_flags & B43_PS_ENABLED) {
hwps = 1;
} else if (ps_flags & B43_PS_DISABLED) {
hwps = 0;
} else {
//TODO: If powersave is not off and FIXME is not set and we are not in adhoc
// and thus is not an AP and we are associated, set bit 25
}
if (ps_flags & B43_PS_AWAKE) {
awake = 1;
} else if (ps_flags & B43_PS_ASLEEP) {
awake = 0;
} else {
//TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
// or we are associated, or FIXME, or the latest PS-Poll packet sent was
// successful, set bit26
}
/* FIXME: For now we force awake-on and hwps-off */
hwps = 0;
awake = 1;
macctl = b43_read32(dev, B43_MMIO_MACCTL);
if (hwps)
macctl |= B43_MACCTL_HWPS;
else
macctl &= ~B43_MACCTL_HWPS;
if (awake)
macctl |= B43_MACCTL_AWAKE;
else
macctl &= ~B43_MACCTL_AWAKE;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
/* Commit write */
b43_read32(dev, B43_MMIO_MACCTL);
if (awake && dev->dev->id.revision >= 5) {
/* Wait for the microcode to wake up. */
for (i = 0; i < 100; i++) {
ucstat = b43_shm_read16(dev, B43_SHM_SHARED,
B43_SHM_SH_UCODESTAT);
if (ucstat != B43_SHM_SH_UCODESTAT_SLEEP)
break;
udelay(10);
}
}
}
/* Turn the Analog ON/OFF */
static void b43_switch_analog(struct b43_wldev *dev, int on)
{
b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
}
void b43_wireless_core_reset(struct b43_wldev *dev, u32 flags)
{
u32 tmslow;
u32 macctl;
flags |= B43_TMSLOW_PHYCLKEN;
flags |= B43_TMSLOW_PHYRESET;
ssb_device_enable(dev->dev, flags);
msleep(2); /* Wait for the PLL to turn on. */
/* Now take the PHY out of Reset again */
tmslow = ssb_read32(dev->dev, SSB_TMSLOW);
tmslow |= SSB_TMSLOW_FGC;
tmslow &= ~B43_TMSLOW_PHYRESET;
ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
msleep(1);
tmslow &= ~SSB_TMSLOW_FGC;
ssb_write32(dev->dev, SSB_TMSLOW, tmslow);
ssb_read32(dev->dev, SSB_TMSLOW); /* flush */
msleep(1);
/* Turn Analog ON */
b43_switch_analog(dev, 1);
macctl = b43_read32(dev, B43_MMIO_MACCTL);
macctl &= ~B43_MACCTL_GMODE;
if (flags & B43_TMSLOW_GMODE)
macctl |= B43_MACCTL_GMODE;
macctl |= B43_MACCTL_IHR_ENABLED;
b43_write32(dev, B43_MMIO_MACCTL, macctl);
}
static void handle_irq_transmit_status(struct b43_wldev *dev)
{
u32 v0, v1;
u16 tmp;
struct b43_txstatus stat;
while (1) {
v0 = b43_read32(dev, B43_MMIO_XMITSTAT_0);
if (!(v0 & 0x00000001))
break;
v1 = b43_read32(dev, B43_MMIO_XMITSTAT_1);
stat.cookie = (v0 >> 16);
stat.seq = (v1 & 0x0000FFFF);
stat.phy_stat = ((v1 & 0x00FF0000) >> 16);
tmp = (v0 & 0x0000FFFF);
stat.frame_count = ((tmp & 0xF000) >> 12);
stat.rts_count = ((tmp & 0x0F00) >> 8);
stat.supp_reason = ((tmp & 0x001C) >> 2);
stat.pm_indicated = !!(tmp & 0x0080);
stat.intermediate = !!(tmp & 0x0040);
stat.for_ampdu = !!(tmp & 0x0020);
stat.acked = !!(tmp & 0x0002);
b43_handle_txstatus(dev, &stat);
}
}
static void drain_txstatus_queue(struct b43_wldev *dev)
{
u32 dummy;
if (dev->dev->id.revision < 5)
return;
/* Read all entries from the microcode TXstatus FIFO
* and throw them away.
*/
while (1) {
dummy = b43_read32(dev, B43_MMIO_XMITSTAT_0);
if (!(dummy & 0x00000001))
break;
dummy = b43_read32(dev, B43_MMIO_XMITSTAT_1);
}
}
static u32 b43_jssi_read(struct b43_wldev *dev)
{
u32 val = 0;
val = b43_shm_read16(dev, B43_SHM_SHARED, 0x08A);
val <<= 16;
val |= b43_shm_read16(dev, B43_SHM_SHARED, 0x088);
return val;
}
static void b43_jssi_write(struct b43_wldev *dev, u32 jssi)
{
b43_shm_write16(dev, B43_SHM_SHARED, 0x088, (jssi & 0x0000FFFF));
b43_shm_write16(dev, B43_SHM_SHARED, 0x08A, (jssi & 0xFFFF0000) >> 16);
}
static void b43_generate_noise_sample(struct b43_wldev *dev)
{
b43_jssi_write(dev, 0x7F7F7F7F);
b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
| (1 << 4));
B43_WARN_ON(dev->noisecalc.channel_at_start != dev->phy.channel);
}
static void b43_calculate_link_quality(struct b43_wldev *dev)
{
/* Top half of Link Quality calculation. */
if (dev->noisecalc.calculation_running)
return;
dev->noisecalc.channel_at_start = dev->phy.channel;
dev->noisecalc.calculation_running = 1;
dev->noisecalc.nr_samples = 0;
b43_generate_noise_sample(dev);
}
static void handle_irq_noise(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
u16 tmp;
u8 noise[4];
u8 i, j;
s32 average;
/* Bottom half of Link Quality calculation. */
B43_WARN_ON(!dev->noisecalc.calculation_running);
if (dev->noisecalc.channel_at_start != phy->channel)
goto drop_calculation;
*((__le32 *)noise) = cpu_to_le32(b43_jssi_read(dev));
if (noise[0] == 0x7F || noise[1] == 0x7F ||
noise[2] == 0x7F || noise[3] == 0x7F)
goto generate_new;
/* Get the noise samples. */
B43_WARN_ON(dev->noisecalc.nr_samples >= 8);
i = dev->noisecalc.nr_samples;
noise[0] = limit_value(noise[0], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
noise[1] = limit_value(noise[1], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
noise[2] = limit_value(noise[2], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
noise[3] = limit_value(noise[3], 0, ARRAY_SIZE(phy->nrssi_lt) - 1);
dev->noisecalc.samples[i][0] = phy->nrssi_lt[noise[0]];
dev->noisecalc.samples[i][1] = phy->nrssi_lt[noise[1]];
dev->noisecalc.samples[i][2] = phy->nrssi_lt[noise[2]];
dev->noisecalc.samples[i][3] = phy->nrssi_lt[noise[3]];
dev->noisecalc.nr_samples++;
if (dev->noisecalc.nr_samples == 8) {
/* Calculate the Link Quality by the noise samples. */
average = 0;
for (i = 0; i < 8; i++) {
for (j = 0; j < 4; j++)
average += dev->noisecalc.samples[i][j];
}
average /= (8 * 4);
average *= 125;
average += 64;
average /= 128;
tmp = b43_shm_read16(dev, B43_SHM_SHARED, 0x40C);
tmp = (tmp / 128) & 0x1F;
if (tmp >= 8)
average += 2;
else
average -= 25;
if (tmp == 8)
average -= 72;
else
average -= 48;
dev->stats.link_noise = average;
drop_calculation:
dev->noisecalc.calculation_running = 0;
return;
}
generate_new:
b43_generate_noise_sample(dev);
}
static void handle_irq_tbtt_indication(struct b43_wldev *dev)
{
if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP)) {
///TODO: PS TBTT
} else {
if (1 /*FIXME: the last PSpoll frame was sent successfully */ )
b43_power_saving_ctl_bits(dev, 0);
}
dev->reg124_set_0x4 = 0;
if (b43_is_mode(dev->wl, IEEE80211_IF_TYPE_IBSS))
dev->reg124_set_0x4 = 1;
}
static void handle_irq_atim_end(struct b43_wldev *dev)
{
if (!dev->reg124_set_0x4 /*FIXME rename this variable */ )
return;
b43_write32(dev, B43_MMIO_STATUS2_BITFIELD,
b43_read32(dev, B43_MMIO_STATUS2_BITFIELD)
| 0x4);
}
static void handle_irq_pmq(struct b43_wldev *dev)
{
u32 tmp;
//TODO: AP mode.
while (1) {
tmp = b43_read32(dev, B43_MMIO_PS_STATUS);
if (!(tmp & 0x00000008))
break;
}
/* 16bit write is odd, but correct. */
b43_write16(dev, B43_MMIO_PS_STATUS, 0x0002);
}
static void b43_write_template_common(struct b43_wldev *dev,
const u8 * data, u16 size,
u16 ram_offset,
u16 shm_size_offset, u8 rate)
{
u32 i, tmp;
struct b43_plcp_hdr4 plcp;
plcp.data = 0;
b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
b43_ram_write(dev, ram_offset, le32_to_cpu(plcp.data));
ram_offset += sizeof(u32);
/* The PLCP is 6 bytes long, but we only wrote 4 bytes, yet.
* So leave the first two bytes of the next write blank.
*/
tmp = (u32) (data[0]) << 16;
tmp |= (u32) (data[1]) << 24;
b43_ram_write(dev, ram_offset, tmp);
ram_offset += sizeof(u32);
for (i = 2; i < size; i += sizeof(u32)) {
tmp = (u32) (data[i + 0]);
if (i + 1 < size)
tmp |= (u32) (data[i + 1]) << 8;
if (i + 2 < size)
tmp |= (u32) (data[i + 2]) << 16;
if (i + 3 < size)
tmp |= (u32) (data[i + 3]) << 24;
b43_ram_write(dev, ram_offset + i - 2, tmp);
}
b43_shm_write16(dev, B43_SHM_SHARED, shm_size_offset,
size + sizeof(struct b43_plcp_hdr6));
}
static void b43_write_beacon_template(struct b43_wldev *dev,
u16 ram_offset,
u16 shm_size_offset, u8 rate)
{
int len;
const u8 *data;
B43_WARN_ON(!dev->cached_beacon);
len = min((size_t) dev->cached_beacon->len,
0x200 - sizeof(struct b43_plcp_hdr6));
data = (const u8 *)(dev->cached_beacon->data);
b43_write_template_common(dev, data,
len, ram_offset, shm_size_offset, rate);
}
static void b43_write_probe_resp_plcp(struct b43_wldev *dev,
u16 shm_offset, u16 size, u8 rate)
{
struct b43_plcp_hdr4 plcp;
u32 tmp;
__le16 dur;
plcp.data = 0;
b43_generate_plcp_hdr(&plcp, size + FCS_LEN, rate);
dur = ieee80211_generic_frame_duration(dev->wl->hw,
dev->wl->if_id, size,
B43_RATE_TO_BASE100KBPS(rate));
/* Write PLCP in two parts and timing for packet transfer */
tmp = le32_to_cpu(plcp.data);
b43_shm_write16(dev, B43_SHM_SHARED, shm_offset, tmp & 0xFFFF);
b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 2, tmp >> 16);
b43_shm_write16(dev, B43_SHM_SHARED, shm_offset + 6, le16_to_cpu(dur));
}
/* Instead of using custom probe response template, this function
* just patches custom beacon template by:
* 1) Changing packet type
* 2) Patching duration field
* 3) Stripping TIM
*/
static u8 *b43_generate_probe_resp(struct b43_wldev *dev,
u16 * dest_size, u8 rate)
{
const u8 *src_data;
u8 *dest_data;
u16 src_size, elem_size, src_pos, dest_pos;
__le16 dur;
struct ieee80211_hdr *hdr;
B43_WARN_ON(!dev->cached_beacon);
src_size = dev->cached_beacon->len;
src_data = (const u8 *)dev->cached_beacon->data;
if (unlikely(src_size < 0x24)) {
b43dbg(dev->wl, "b43_generate_probe_resp: " "invalid beacon\n");
return NULL;
}
dest_data = kmalloc(src_size, GFP_ATOMIC);
if (unlikely(!dest_data))
return NULL;
/* 0x24 is offset of first variable-len Information-Element
* in beacon frame.
*/
memcpy(dest_data, src_data, 0x24);
src_pos = dest_pos = 0x24;
for (; src_pos < src_size - 2; src_pos += elem_size) {
elem_size = src_data[src_pos + 1] + 2;
if (src_data[src_pos] != 0x05) { /* TIM */
memcpy(dest_data + dest_pos, src_data + src_pos,
elem_size);
dest_pos += elem_size;
}
}
*dest_size = dest_pos;
hdr = (struct ieee80211_hdr *)dest_data;
/* Set the frame control. */
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_PROBE_RESP);
dur = ieee80211_generic_frame_duration(dev->wl->hw,
dev->wl->if_id, *dest_size,
B43_RATE_TO_BASE100KBPS(rate));
hdr->duration_id = dur;
return dest_data;
}
static void b43_write_probe_resp_template(struct b43_wldev *dev,
u16 ram_offset,
u16 shm_size_offset, u8 rate)
{
u8 *probe_resp_data;
u16 size;
B43_WARN_ON(!dev->cached_beacon);
size = dev->cached_beacon->len;
probe_resp_data = b43_generate_probe_resp(dev, &size, rate);
if (unlikely(!probe_resp_data))
return;
/* Looks like PLCP headers plus packet timings are stored for
* all possible basic rates
*/
b43_write_probe_resp_plcp(dev, 0x31A, size, B43_CCK_RATE_1MB);
b43_write_probe_resp_plcp(dev, 0x32C, size, B43_CCK_RATE_2MB);
b43_write_probe_resp_plcp(dev, 0x33E, size, B43_CCK_RATE_5MB);
b43_write_probe_resp_plcp(dev, 0x350, size, B43_CCK_RATE_11MB);
size = min((size_t) size, 0x200 - sizeof(struct b43_plcp_hdr6));
b43_write_template_common(dev, probe_resp_data,
size, ram_offset, shm_size_offset, rate);
kfree(probe_resp_data);
}
static int b43_refresh_cached_beacon(struct b43_wldev *dev,
struct sk_buff *beacon)
{
if (dev->cached_beacon)
kfree_skb(dev->cached_beacon);
dev->cached_beacon = beacon;
return 0;
}
static void b43_update_templates(struct b43_wldev *dev)
{
u32 status;
B43_WARN_ON(!dev->cached_beacon);
b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
b43_write_probe_resp_template(dev, 0x268, 0x4A, B43_CCK_RATE_11MB);
status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
status |= 0x03;
b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
}
static void b43_refresh_templates(struct b43_wldev *dev, struct sk_buff *beacon)
{
int err;
err = b43_refresh_cached_beacon(dev, beacon);
if (unlikely(err))
return;
b43_update_templates(dev);
}
static void b43_set_ssid(struct b43_wldev *dev, const u8 * ssid, u8 ssid_len)
{
u32 tmp;
u16 i, len;
len = min((u16) ssid_len, (u16) 0x100);
for (i = 0; i < len; i += sizeof(u32)) {
tmp = (u32) (ssid[i + 0]);
if (i + 1 < len)
tmp |= (u32) (ssid[i + 1]) << 8;
if (i + 2 < len)
tmp |= (u32) (ssid[i + 2]) << 16;
if (i + 3 < len)
tmp |= (u32) (ssid[i + 3]) << 24;
b43_shm_write32(dev, B43_SHM_SHARED, 0x380 + i, tmp);
}
b43_shm_write16(dev, B43_SHM_SHARED, 0x48, len);
}
static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
{
b43_time_lock(dev);
if (dev->dev->id.revision >= 3) {
b43_write32(dev, 0x188, (beacon_int << 16));
} else {
b43_write16(dev, 0x606, (beacon_int >> 6));
b43_write16(dev, 0x610, beacon_int);
}
b43_time_unlock(dev);
}
static void handle_irq_beacon(struct b43_wldev *dev)
{
u32 status;
if (!b43_is_mode(dev->wl, IEEE80211_IF_TYPE_AP))
return;
dev->irq_savedstate &= ~B43_IRQ_BEACON;
status = b43_read32(dev, B43_MMIO_STATUS2_BITFIELD);
if (!dev->cached_beacon || ((status & 0x1) && (status & 0x2))) {
/* ACK beacon IRQ. */
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_BEACON);
dev->irq_savedstate |= B43_IRQ_BEACON;
if (dev->cached_beacon)
kfree_skb(dev->cached_beacon);
dev->cached_beacon = NULL;
return;
}
if (!(status & 0x1)) {
b43_write_beacon_template(dev, 0x68, 0x18, B43_CCK_RATE_1MB);
status |= 0x1;
b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
}
if (!(status & 0x2)) {
b43_write_beacon_template(dev, 0x468, 0x1A, B43_CCK_RATE_1MB);
status |= 0x2;
b43_write32(dev, B43_MMIO_STATUS2_BITFIELD, status);
}
}
static void handle_irq_ucode_debug(struct b43_wldev *dev)
{
//TODO
}
/* Interrupt handler bottom-half */
static void b43_interrupt_tasklet(struct b43_wldev *dev)
{
u32 reason;
u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
u32 merged_dma_reason = 0;
int i;
unsigned long flags;
spin_lock_irqsave(&dev->wl->irq_lock, flags);
B43_WARN_ON(b43_status(dev) != B43_STAT_STARTED);
reason = dev->irq_reason;
for (i = 0; i < ARRAY_SIZE(dma_reason); i++) {
dma_reason[i] = dev->dma_reason[i];
merged_dma_reason |= dma_reason[i];
}
if (unlikely(reason & B43_IRQ_MAC_TXERR))
b43err(dev->wl, "MAC transmission error\n");
if (unlikely(reason & B43_IRQ_PHY_TXERR)) {
b43err(dev->wl, "PHY transmission error\n");
rmb();
if (unlikely(atomic_dec_and_test(&dev->phy.txerr_cnt))) {
atomic_set(&dev->phy.txerr_cnt,
B43_PHY_TX_BADNESS_LIMIT);
b43err(dev->wl, "Too many PHY TX errors, "
"restarting the controller\n");
b43_controller_restart(dev, "PHY TX errors");
}
}
if (unlikely(merged_dma_reason & (B43_DMAIRQ_FATALMASK |
B43_DMAIRQ_NONFATALMASK))) {
if (merged_dma_reason & B43_DMAIRQ_FATALMASK) {
b43err(dev->wl, "Fatal DMA error: "
"0x%08X, 0x%08X, 0x%08X, "
"0x%08X, 0x%08X, 0x%08X\n",
dma_reason[0], dma_reason[1],
dma_reason[2], dma_reason[3],
dma_reason[4], dma_reason[5]);
b43_controller_restart(dev, "DMA error");
mmiowb();
spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
return;
}
if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {
b43err(dev->wl, "DMA error: "
"0x%08X, 0x%08X, 0x%08X, "
"0x%08X, 0x%08X, 0x%08X\n",
dma_reason[0], dma_reason[1],
dma_reason[2], dma_reason[3],
dma_reason[4], dma_reason[5]);
}
}
if (unlikely(reason & B43_IRQ_UCODE_DEBUG))
handle_irq_ucode_debug(dev);
if (reason & B43_IRQ_TBTT_INDI)
handle_irq_tbtt_indication(dev);
if (reason & B43_IRQ_ATIM_END)
handle_irq_atim_end(dev);
if (reason & B43_IRQ_BEACON)
handle_irq_beacon(dev);
if (reason & B43_IRQ_PMQ)
handle_irq_pmq(dev);
if (reason & B43_IRQ_TXFIFO_FLUSH_OK)
;/* TODO */
if (reason & B43_IRQ_NOISESAMPLE_OK)
handle_irq_noise(dev);
/* Check the DMA reason registers for received data. */
if (dma_reason[0] & B43_DMAIRQ_RX_DONE) {
if (b43_using_pio(dev))
b43_pio_rx(dev->pio.queue0);
else
b43_dma_rx(dev->dma.rx_ring0);
}
B43_WARN_ON(dma_reason[1] & B43_DMAIRQ_RX_DONE);
B43_WARN_ON(dma_reason[2] & B43_DMAIRQ_RX_DONE);
if (dma_reason[3] & B43_DMAIRQ_RX_DONE) {
if (b43_using_pio(dev))
b43_pio_rx(dev->pio.queue3);
else
b43_dma_rx(dev->dma.rx_ring3);
}
B43_WARN_ON(dma_reason[4] & B43_DMAIRQ_RX_DONE);
B43_WARN_ON(dma_reason[5] & B43_DMAIRQ_RX_DONE);
if (reason & B43_IRQ_TX_OK)
handle_irq_transmit_status(dev);
b43_interrupt_enable(dev, dev->irq_savedstate);
mmiowb();
spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
}
static void pio_irq_workaround(struct b43_wldev *dev, u16 base, int queueidx)
{
u16 rxctl;
rxctl = b43_read16(dev, base + B43_PIO_RXCTL);
if (rxctl & B43_PIO_RXCTL_DATAAVAILABLE)
dev->dma_reason[queueidx] |= B43_DMAIRQ_RX_DONE;
else
dev->dma_reason[queueidx] &= ~B43_DMAIRQ_RX_DONE;
}
static void b43_interrupt_ack(struct b43_wldev *dev, u32 reason)
{
if (b43_using_pio(dev) &&
(dev->dev->id.revision < 3) &&
(!(reason & B43_IRQ_PIO_WORKAROUND))) {
/* Apply a PIO specific workaround to the dma_reasons */
pio_irq_workaround(dev, B43_MMIO_PIO1_BASE, 0);
pio_irq_workaround(dev, B43_MMIO_PIO2_BASE, 1);
pio_irq_workaround(dev, B43_MMIO_PIO3_BASE, 2);
pio_irq_workaround(dev, B43_MMIO_PIO4_BASE, 3);
}
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, reason);
b43_write32(dev, B43_MMIO_DMA0_REASON, dev->dma_reason[0]);
b43_write32(dev, B43_MMIO_DMA1_REASON, dev->dma_reason[1]);
b43_write32(dev, B43_MMIO_DMA2_REASON, dev->dma_reason[2]);
b43_write32(dev, B43_MMIO_DMA3_REASON, dev->dma_reason[3]);
b43_write32(dev, B43_MMIO_DMA4_REASON, dev->dma_reason[4]);
b43_write32(dev, B43_MMIO_DMA5_REASON, dev->dma_reason[5]);
}
/* Interrupt handler top-half */
static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
{
irqreturn_t ret = IRQ_NONE;
struct b43_wldev *dev = dev_id;
u32 reason;
if (!dev)
return IRQ_NONE;
spin_lock(&dev->wl->irq_lock);
if (b43_status(dev) < B43_STAT_STARTED)
goto out;
reason = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (reason == 0xffffffff) /* shared IRQ */
goto out;
ret = IRQ_HANDLED;
reason &= b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
if (!reason)
goto out;
dev->dma_reason[0] = b43_read32(dev, B43_MMIO_DMA0_REASON)
& 0x0001DC00;
dev->dma_reason[1] = b43_read32(dev, B43_MMIO_DMA1_REASON)
& 0x0000DC00;
dev->dma_reason[2] = b43_read32(dev, B43_MMIO_DMA2_REASON)
& 0x0000DC00;
dev->dma_reason[3] = b43_read32(dev, B43_MMIO_DMA3_REASON)
& 0x0001DC00;
dev->dma_reason[4] = b43_read32(dev, B43_MMIO_DMA4_REASON)
& 0x0000DC00;
dev->dma_reason[5] = b43_read32(dev, B43_MMIO_DMA5_REASON)
& 0x0000DC00;
b43_interrupt_ack(dev, reason);
/* disable all IRQs. They are enabled again in the bottom half. */
dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
/* save the reason code and call our bottom half. */
dev->irq_reason = reason;
tasklet_schedule(&dev->isr_tasklet);
out:
mmiowb();
spin_unlock(&dev->wl->irq_lock);
return ret;
}
static void b43_release_firmware(struct b43_wldev *dev)
{
release_firmware(dev->fw.ucode);
dev->fw.ucode = NULL;
release_firmware(dev->fw.pcm);
dev->fw.pcm = NULL;
release_firmware(dev->fw.initvals);
dev->fw.initvals = NULL;
release_firmware(dev->fw.initvals_band);
dev->fw.initvals_band = NULL;
}
static void b43_print_fw_helptext(struct b43_wl *wl)
{
b43err(wl, "You must go to "
"http://linuxwireless.org/en/users/Drivers/b43#devicefirmware "
"and download the correct firmware (version 4).\n");
}
static int do_request_fw(struct b43_wldev *dev,
const char *name,
const struct firmware **fw)
{
char path[sizeof(modparam_fwpostfix) + 32];
struct b43_fw_header *hdr;
u32 size;
int err;
if (!name)
return 0;
snprintf(path, ARRAY_SIZE(path),
"b43%s/%s.fw",
modparam_fwpostfix, name);
err = request_firmware(fw, path, dev->dev->dev);
if (err) {
b43err(dev->wl, "Firmware file \"%s\" not found "
"or load failed.\n", path);
return err;
}
if ((*fw)->size < sizeof(struct b43_fw_header))
goto err_format;
hdr = (struct b43_fw_header *)((*fw)->data);
switch (hdr->type) {
case B43_FW_TYPE_UCODE:
case B43_FW_TYPE_PCM:
size = be32_to_cpu(hdr->size);
if (size != (*fw)->size - sizeof(struct b43_fw_header))
goto err_format;
/* fallthrough */
case B43_FW_TYPE_IV:
if (hdr->ver != 1)
goto err_format;
break;
default:
goto err_format;
}
return err;
err_format:
b43err(dev->wl, "Firmware file \"%s\" format error.\n", path);
return -EPROTO;
}
static int b43_request_firmware(struct b43_wldev *dev)
{
struct b43_firmware *fw = &dev->fw;
const u8 rev = dev->dev->id.revision;
const char *filename;
u32 tmshigh;
int err;
tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
if (!fw->ucode) {
if ((rev >= 5) && (rev <= 10))
filename = "ucode5";
else if ((rev >= 11) && (rev <= 12))
filename = "ucode11";
else if (rev >= 13)
filename = "ucode13";
else
goto err_no_ucode;
err = do_request_fw(dev, filename, &fw->ucode);
if (err)
goto err_load;
}
if (!fw->pcm) {
if ((rev >= 5) && (rev <= 10))
filename = "pcm5";
else if (rev >= 11)
filename = NULL;
else
goto err_no_pcm;
err = do_request_fw(dev, filename, &fw->pcm);
if (err)
goto err_load;
}
if (!fw->initvals) {
switch (dev->phy.type) {
case B43_PHYTYPE_A:
if ((rev >= 5) && (rev <= 10)) {
if (tmshigh & B43_TMSHIGH_GPHY)
filename = "a0g1initvals5";
else
filename = "a0g0initvals5";
} else
goto err_no_initvals;
break;
case B43_PHYTYPE_G:
if ((rev >= 5) && (rev <= 10))
filename = "b0g0initvals5";
else if (rev >= 13)
filename = "lp0initvals13";
else
goto err_no_initvals;
break;
default:
goto err_no_initvals;
}
err = do_request_fw(dev, filename, &fw->initvals);
if (err)
goto err_load;
}
if (!fw->initvals_band) {
switch (dev->phy.type) {
case B43_PHYTYPE_A:
if ((rev >= 5) && (rev <= 10)) {
if (tmshigh & B43_TMSHIGH_GPHY)
filename = "a0g1bsinitvals5";
else
filename = "a0g0bsinitvals5";
} else if (rev >= 11)
filename = NULL;
else
goto err_no_initvals;
break;
case B43_PHYTYPE_G:
if ((rev >= 5) && (rev <= 10))
filename = "b0g0bsinitvals5";
else if (rev >= 11)
filename = NULL;
else
goto err_no_initvals;
break;
default:
goto err_no_initvals;
}
err = do_request_fw(dev, filename, &fw->initvals_band);
if (err)
goto err_load;
}
return 0;
err_load:
b43_print_fw_helptext(dev->wl);
goto error;
err_no_ucode:
err = -ENODEV;
b43err(dev->wl, "No microcode available for core rev %u\n", rev);
goto error;
err_no_pcm:
err = -ENODEV;
b43err(dev->wl, "No PCM available for core rev %u\n", rev);
goto error;
err_no_initvals:
err = -ENODEV;
b43err(dev->wl, "No Initial Values firmware file for PHY %u, "
"core rev %u\n", dev->phy.type, rev);
goto error;
error:
b43_release_firmware(dev);
return err;
}
static int b43_upload_microcode(struct b43_wldev *dev)
{
const size_t hdr_len = sizeof(struct b43_fw_header);
const __be32 *data;
unsigned int i, len;
u16 fwrev, fwpatch, fwdate, fwtime;
u32 tmp;
int err = 0;
/* Upload Microcode. */
data = (__be32 *) (dev->fw.ucode->data + hdr_len);
len = (dev->fw.ucode->size - hdr_len) / sizeof(__be32);
b43_shm_control_word(dev, B43_SHM_UCODE | B43_SHM_AUTOINC_W, 0x0000);
for (i = 0; i < len; i++) {
b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
udelay(10);
}
if (dev->fw.pcm) {
/* Upload PCM data. */
data = (__be32 *) (dev->fw.pcm->data + hdr_len);
len = (dev->fw.pcm->size - hdr_len) / sizeof(__be32);
b43_shm_control_word(dev, B43_SHM_HW, 0x01EA);
b43_write32(dev, B43_MMIO_SHM_DATA, 0x00004000);
/* No need for autoinc bit in SHM_HW */
b43_shm_control_word(dev, B43_SHM_HW, 0x01EB);
for (i = 0; i < len; i++) {
b43_write32(dev, B43_MMIO_SHM_DATA, be32_to_cpu(data[i]));
udelay(10);
}
}
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, B43_IRQ_ALL);
b43_write32(dev, B43_MMIO_MACCTL,
B43_MACCTL_PSM_RUN |
B43_MACCTL_IHR_ENABLED | B43_MACCTL_INFRA);
/* Wait for the microcode to load and respond */
i = 0;
while (1) {
tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (tmp == B43_IRQ_MAC_SUSPENDED)
break;
i++;
if (i >= 50) {
b43err(dev->wl, "Microcode not responding\n");
b43_print_fw_helptext(dev->wl);
err = -ENODEV;
goto out;
}
udelay(10);
}
b43_read32(dev, B43_MMIO_GEN_IRQ_REASON); /* dummy read */
/* Get and check the revisions. */
fwrev = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEREV);
fwpatch = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEPATCH);
fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
if (fwrev <= 0x128) {
b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
"binary drivers older than version 4.x is unsupported. "
"You must upgrade your firmware files.\n");
b43_print_fw_helptext(dev->wl);
b43_write32(dev, B43_MMIO_MACCTL, 0);
err = -EOPNOTSUPP;
goto out;
}
b43dbg(dev->wl, "Loading firmware version %u.%u "
"(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
fwrev, fwpatch,
(fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
(fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
dev->fw.rev = fwrev;
dev->fw.patch = fwpatch;
out:
return err;
}
static int b43_write_initvals(struct b43_wldev *dev,
const struct b43_iv *ivals,
size_t count,
size_t array_size)
{
const struct b43_iv *iv;
u16 offset;
size_t i;
bool bit32;
BUILD_BUG_ON(sizeof(struct b43_iv) != 6);
iv = ivals;
for (i = 0; i < count; i++) {
if (array_size < sizeof(iv->offset_size))
goto err_format;
array_size -= sizeof(iv->offset_size);
offset = be16_to_cpu(iv->offset_size);
bit32 = !!(offset & B43_IV_32BIT);
offset &= B43_IV_OFFSET_MASK;
if (offset >= 0x1000)
goto err_format;
if (bit32) {
u32 value;
if (array_size < sizeof(iv->data.d32))
goto err_format;
array_size -= sizeof(iv->data.d32);
value = be32_to_cpu(get_unaligned(&iv->data.d32));
b43_write32(dev, offset, value);
iv = (const struct b43_iv *)((const uint8_t *)iv +
sizeof(__be16) +
sizeof(__be32));
} else {
u16 value;
if (array_size < sizeof(iv->data.d16))
goto err_format;
array_size -= sizeof(iv->data.d16);
value = be16_to_cpu(iv->data.d16);
b43_write16(dev, offset, value);
iv = (const struct b43_iv *)((const uint8_t *)iv +
sizeof(__be16) +
sizeof(__be16));
}
}
if (array_size)
goto err_format;
return 0;
err_format:
b43err(dev->wl, "Initial Values Firmware file-format error.\n");
b43_print_fw_helptext(dev->wl);
return -EPROTO;
}
static int b43_upload_initvals(struct b43_wldev *dev)
{
const size_t hdr_len = sizeof(struct b43_fw_header);
const struct b43_fw_header *hdr;
struct b43_firmware *fw = &dev->fw;
const struct b43_iv *ivals;
size_t count;
int err;
hdr = (const struct b43_fw_header *)(fw->initvals->data);
ivals = (const struct b43_iv *)(fw->initvals->data + hdr_len);
count = be32_to_cpu(hdr->size);
err = b43_write_initvals(dev, ivals, count,
fw->initvals->size - hdr_len);
if (err)
goto out;
if (fw->initvals_band) {
hdr = (const struct b43_fw_header *)(fw->initvals_band->data);
ivals = (const struct b43_iv *)(fw->initvals_band->data + hdr_len);
count = be32_to_cpu(hdr->size);
err = b43_write_initvals(dev, ivals, count,
fw->initvals_band->size - hdr_len);
if (err)
goto out;
}
out:
return err;
}
/* Initialize the GPIOs
* http://bcm-specs.sipsolutions.net/GPIO
*/
static int b43_gpio_init(struct b43_wldev *dev)
{
struct ssb_bus *bus = dev->dev->bus;
struct ssb_device *gpiodev, *pcidev = NULL;
u32 mask, set;
b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
& ~B43_MACCTL_GPOUTSMSK);
b43_write16(dev, B43_MMIO_GPIO_MASK, b43_read16(dev, B43_MMIO_GPIO_MASK)
| 0x000F);
mask = 0x0000001F;
set = 0x0000000F;
if (dev->dev->bus->chip_id == 0x4301) {
mask |= 0x0060;
set |= 0x0060;
}
if (0 /* FIXME: conditional unknown */ ) {
b43_write16(dev, B43_MMIO_GPIO_MASK,
b43_read16(dev, B43_MMIO_GPIO_MASK)
| 0x0100);
mask |= 0x0180;
set |= 0x0180;
}
if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL) {
b43_write16(dev, B43_MMIO_GPIO_MASK,
b43_read16(dev, B43_MMIO_GPIO_MASK)
| 0x0200);
mask |= 0x0200;
set |= 0x0200;
}
if (dev->dev->id.revision >= 2)
mask |= 0x0010; /* FIXME: This is redundant. */
#ifdef CONFIG_SSB_DRIVER_PCICORE
pcidev = bus->pcicore.dev;
#endif
gpiodev = bus->chipco.dev ? : pcidev;
if (!gpiodev)
return 0;
ssb_write32(gpiodev, B43_GPIO_CONTROL,
(ssb_read32(gpiodev, B43_GPIO_CONTROL)
& mask) | set);
return 0;
}
/* Turn off all GPIO stuff. Call this on module unload, for example. */
static void b43_gpio_cleanup(struct b43_wldev *dev)
{
struct ssb_bus *bus = dev->dev->bus;
struct ssb_device *gpiodev, *pcidev = NULL;
#ifdef CONFIG_SSB_DRIVER_PCICORE
pcidev = bus->pcicore.dev;
#endif
gpiodev = bus->chipco.dev ? : pcidev;
if (!gpiodev)
return;
ssb_write32(gpiodev, B43_GPIO_CONTROL, 0);
}
/* http://bcm-specs.sipsolutions.net/EnableMac */
void b43_mac_enable(struct b43_wldev *dev)
{
dev->mac_suspended--;
B43_WARN_ON(dev->mac_suspended < 0);
B43_WARN_ON(irqs_disabled());
if (dev->mac_suspended == 0) {
b43_write32(dev, B43_MMIO_MACCTL,
b43_read32(dev, B43_MMIO_MACCTL)
| B43_MACCTL_ENABLED);
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON,
B43_IRQ_MAC_SUSPENDED);
/* Commit writes */
b43_read32(dev, B43_MMIO_MACCTL);
b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
b43_power_saving_ctl_bits(dev, 0);
/* Re-enable IRQs. */
spin_lock_irq(&dev->wl->irq_lock);
b43_interrupt_enable(dev, dev->irq_savedstate);
spin_unlock_irq(&dev->wl->irq_lock);
}
}
/* http://bcm-specs.sipsolutions.net/SuspendMAC */
void b43_mac_suspend(struct b43_wldev *dev)
{
int i;
u32 tmp;
might_sleep();
B43_WARN_ON(irqs_disabled());
B43_WARN_ON(dev->mac_suspended < 0);
if (dev->mac_suspended == 0) {
/* Mask IRQs before suspending MAC. Otherwise
* the MAC stays busy and won't suspend. */
spin_lock_irq(&dev->wl->irq_lock);
tmp = b43_interrupt_disable(dev, B43_IRQ_ALL);
spin_unlock_irq(&dev->wl->irq_lock);
b43_synchronize_irq(dev);
dev->irq_savedstate = tmp;
b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
b43_write32(dev, B43_MMIO_MACCTL,
b43_read32(dev, B43_MMIO_MACCTL)
& ~B43_MACCTL_ENABLED);
/* force pci to flush the write */
b43_read32(dev, B43_MMIO_MACCTL);
for (i = 40; i; i--) {
tmp = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (tmp & B43_IRQ_MAC_SUSPENDED)
goto out;
msleep(1);
}
b43err(dev->wl, "MAC suspend failed\n");
}
out:
dev->mac_suspended++;
}
static void b43_adjust_opmode(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
u32 ctl;
u16 cfp_pretbtt;
ctl = b43_read32(dev, B43_MMIO_MACCTL);
/* Reset status to STA infrastructure mode. */
ctl &= ~B43_MACCTL_AP;
ctl &= ~B43_MACCTL_KEEP_CTL;
ctl &= ~B43_MACCTL_KEEP_BADPLCP;
ctl &= ~B43_MACCTL_KEEP_BAD;
ctl &= ~B43_MACCTL_PROMISC;
ctl &= ~B43_MACCTL_BEACPROMISC;
ctl |= B43_MACCTL_INFRA;
if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
ctl |= B43_MACCTL_AP;
else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
ctl &= ~B43_MACCTL_INFRA;
if (wl->filter_flags & FIF_CONTROL)
ctl |= B43_MACCTL_KEEP_CTL;
if (wl->filter_flags & FIF_FCSFAIL)
ctl |= B43_MACCTL_KEEP_BAD;
if (wl->filter_flags & FIF_PLCPFAIL)
ctl |= B43_MACCTL_KEEP_BADPLCP;
if (wl->filter_flags & FIF_PROMISC_IN_BSS)
ctl |= B43_MACCTL_PROMISC;
if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
ctl |= B43_MACCTL_BEACPROMISC;
/* Workaround: On old hardware the HW-MAC-address-filter
* doesn't work properly, so always run promisc in filter
* it in software. */
if (dev->dev->id.revision <= 4)
ctl |= B43_MACCTL_PROMISC;
b43_write32(dev, B43_MMIO_MACCTL, ctl);
cfp_pretbtt = 2;
if ((ctl & B43_MACCTL_INFRA) && !(ctl & B43_MACCTL_AP)) {
if (dev->dev->bus->chip_id == 0x4306 &&
dev->dev->bus->chip_rev == 3)
cfp_pretbtt = 100;
else
cfp_pretbtt = 50;
}
b43_write16(dev, 0x612, cfp_pretbtt);
}
static void b43_rate_memory_write(struct b43_wldev *dev, u16 rate, int is_ofdm)
{
u16 offset;
if (is_ofdm) {
offset = 0x480;
offset += (b43_plcp_get_ratecode_ofdm(rate) & 0x000F) * 2;
} else {
offset = 0x4C0;
offset += (b43_plcp_get_ratecode_cck(rate) & 0x000F) * 2;
}
b43_shm_write16(dev, B43_SHM_SHARED, offset + 0x20,
b43_shm_read16(dev, B43_SHM_SHARED, offset));
}
static void b43_rate_memory_init(struct b43_wldev *dev)
{
switch (dev->phy.type) {
case B43_PHYTYPE_A:
case B43_PHYTYPE_G:
b43_rate_memory_write(dev, B43_OFDM_RATE_6MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_12MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_18MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_24MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_36MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_48MB, 1);
b43_rate_memory_write(dev, B43_OFDM_RATE_54MB, 1);
if (dev->phy.type == B43_PHYTYPE_A)
break;
/* fallthrough */
case B43_PHYTYPE_B:
b43_rate_memory_write(dev, B43_CCK_RATE_1MB, 0);
b43_rate_memory_write(dev, B43_CCK_RATE_2MB, 0);
b43_rate_memory_write(dev, B43_CCK_RATE_5MB, 0);
b43_rate_memory_write(dev, B43_CCK_RATE_11MB, 0);
break;
default:
B43_WARN_ON(1);
}
}
/* Set the TX-Antenna for management frames sent by firmware. */
static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
{
u16 ant = 0;
u16 tmp;
switch (antenna) {
case B43_ANTENNA0:
ant |= B43_TX4_PHY_ANT0;
break;
case B43_ANTENNA1:
ant |= B43_TX4_PHY_ANT1;
break;
case B43_ANTENNA_AUTO:
ant |= B43_TX4_PHY_ANTLAST;
break;
default:
B43_WARN_ON(1);
}
/* FIXME We also need to set the other flags of the PHY control field somewhere. */
/* For Beacons */
tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL);
tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_BEACPHYCTL, tmp);
/* For ACK/CTS */
tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL);
tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_ACKCTSPHYCTL, tmp);
/* For Probe Resposes */
tmp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL);
tmp = (tmp & ~B43_TX4_PHY_ANT) | ant;
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
}
/* This is the opposite of b43_chip_init() */
static void b43_chip_exit(struct b43_wldev *dev)
{
b43_radio_turn_off(dev, 1);
b43_gpio_cleanup(dev);
/* firmware is released later */
}
/* Initialize the chip
* http://bcm-specs.sipsolutions.net/ChipInit
*/
static int b43_chip_init(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
int err, tmp;
u32 value32;
u16 value16;
b43_write32(dev, B43_MMIO_MACCTL,
B43_MACCTL_PSM_JMP0 | B43_MACCTL_IHR_ENABLED);
err = b43_request_firmware(dev);
if (err)
goto out;
err = b43_upload_microcode(dev);
if (err)
goto out; /* firmware is released later */
err = b43_gpio_init(dev);
if (err)
goto out; /* firmware is released later */
err = b43_upload_initvals(dev);
if (err)
goto err_gpio_clean;
b43_radio_turn_on(dev);
b43_write16(dev, 0x03E6, 0x0000);
err = b43_phy_init(dev);
if (err)
goto err_radio_off;
/* Select initial Interference Mitigation. */
tmp = phy->interfmode;
phy->interfmode = B43_INTERFMODE_NONE;
b43_radio_set_interference_mitigation(dev, tmp);
b43_set_rx_antenna(dev, B43_ANTENNA_DEFAULT);
b43_mgmtframe_txantenna(dev, B43_ANTENNA_DEFAULT);
if (phy->type == B43_PHYTYPE_B) {
value16 = b43_read16(dev, 0x005E);
value16 |= 0x0004;
b43_write16(dev, 0x005E, value16);
}
b43_write32(dev, 0x0100, 0x01000000);
if (dev->dev->id.revision < 5)
b43_write32(dev, 0x010C, 0x01000000);
b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
& ~B43_MACCTL_INFRA);
b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
| B43_MACCTL_INFRA);
if (b43_using_pio(dev)) {
b43_write32(dev, 0x0210, 0x00000100);
b43_write32(dev, 0x0230, 0x00000100);
b43_write32(dev, 0x0250, 0x00000100);
b43_write32(dev, 0x0270, 0x00000100);
b43_shm_write16(dev, B43_SHM_SHARED, 0x0034, 0x0000);
}
/* Probe Response Timeout value */
/* FIXME: Default to 0, has to be set by ioctl probably... :-/ */
b43_shm_write16(dev, B43_SHM_SHARED, 0x0074, 0x0000);
/* Initially set the wireless operation mode. */
b43_adjust_opmode(dev);
if (dev->dev->id.revision < 3) {
b43_write16(dev, 0x060E, 0x0000);
b43_write16(dev, 0x0610, 0x8000);
b43_write16(dev, 0x0604, 0x0000);
b43_write16(dev, 0x0606, 0x0200);
} else {
b43_write32(dev, 0x0188, 0x80000000);
b43_write32(dev, 0x018C, 0x02000000);
}
b43_write32(dev, B43_MMIO_GEN_IRQ_REASON, 0x00004000);
b43_write32(dev, B43_MMIO_DMA0_IRQ_MASK, 0x0001DC00);
b43_write32(dev, B43_MMIO_DMA1_IRQ_MASK, 0x0000DC00);
b43_write32(dev, B43_MMIO_DMA2_IRQ_MASK, 0x0000DC00);
b43_write32(dev, B43_MMIO_DMA3_IRQ_MASK, 0x0001DC00);
b43_write32(dev, B43_MMIO_DMA4_IRQ_MASK, 0x0000DC00);
b43_write32(dev, B43_MMIO_DMA5_IRQ_MASK, 0x0000DC00);
value32 = ssb_read32(dev->dev, SSB_TMSLOW);
value32 |= 0x00100000;
ssb_write32(dev->dev, SSB_TMSLOW, value32);
b43_write16(dev, B43_MMIO_POWERUP_DELAY,
dev->dev->bus->chipco.fast_pwrup_delay);
err = 0;
b43dbg(dev->wl, "Chip initialized\n");
out:
return err;
err_radio_off:
b43_radio_turn_off(dev, 1);
err_gpio_clean:
b43_gpio_cleanup(dev);
return err;
}
static void b43_periodic_every120sec(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
if (phy->type != B43_PHYTYPE_G || phy->rev < 2)
return;
b43_mac_suspend(dev);
b43_lo_g_measure(dev);
b43_mac_enable(dev);
if (b43_has_hardware_pctl(phy))
b43_lo_g_ctl_mark_all_unused(dev);
}
static void b43_periodic_every60sec(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
if (!b43_has_hardware_pctl(phy))
b43_lo_g_ctl_mark_all_unused(dev);
if (dev->dev->bus->sprom.boardflags_lo & B43_BFL_RSSI) {
b43_mac_suspend(dev);
b43_calc_nrssi_slope(dev);
if ((phy->radio_ver == 0x2050) && (phy->radio_rev == 8)) {
u8 old_chan = phy->channel;
/* VCO Calibration */
if (old_chan >= 8)
b43_radio_selectchannel(dev, 1, 0);
else
b43_radio_selectchannel(dev, 13, 0);
b43_radio_selectchannel(dev, old_chan, 0);
}
b43_mac_enable(dev);
}
}
static void b43_periodic_every30sec(struct b43_wldev *dev)
{
/* Update device statistics. */
b43_calculate_link_quality(dev);
}
static void b43_periodic_every15sec(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
if (phy->type == B43_PHYTYPE_G) {
//TODO: update_aci_moving_average
if (phy->aci_enable && phy->aci_wlan_automatic) {
b43_mac_suspend(dev);
if (!phy->aci_enable && 1 /*TODO: not scanning? */ ) {
if (0 /*TODO: bunch of conditions */ ) {
b43_radio_set_interference_mitigation
(dev, B43_INTERFMODE_MANUALWLAN);
}
} else if (1 /*TODO*/) {
/*
if ((aci_average > 1000) && !(b43_radio_aci_scan(dev))) {
b43_radio_set_interference_mitigation(dev,
B43_INTERFMODE_NONE);
}
*/
}
b43_mac_enable(dev);
} else if (phy->interfmode == B43_INTERFMODE_NONWLAN &&
phy->rev == 1) {
//TODO: implement rev1 workaround
}
}
b43_phy_xmitpower(dev); //FIXME: unless scanning?
//TODO for APHY (temperature?)
atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
wmb();
}
static void do_periodic_work(struct b43_wldev *dev)
{
unsigned int state;
state = dev->periodic_state;
if (state % 8 == 0)
b43_periodic_every120sec(dev);
if (state % 4 == 0)
b43_periodic_every60sec(dev);
if (state % 2 == 0)
b43_periodic_every30sec(dev);
b43_periodic_every15sec(dev);
}
/* Periodic work locking policy:
* The whole periodic work handler is protected by
* wl->mutex. If another lock is needed somewhere in the
* pwork callchain, it's aquired in-place, where it's needed.
*/
static void b43_periodic_work_handler(struct work_struct *work)
{
struct b43_wldev *dev = container_of(work, struct b43_wldev,
periodic_work.work);
struct b43_wl *wl = dev->wl;
unsigned long delay;
mutex_lock(&wl->mutex);
if (unlikely(b43_status(dev) != B43_STAT_STARTED))
goto out;
if (b43_debug(dev, B43_DBG_PWORK_STOP))
goto out_requeue;
do_periodic_work(dev);
dev->periodic_state++;
out_requeue:
if (b43_debug(dev, B43_DBG_PWORK_FAST))
delay = msecs_to_jiffies(50);
else
delay = round_jiffies_relative(HZ * 15);
queue_delayed_work(wl->hw->workqueue, &dev->periodic_work, delay);
out:
mutex_unlock(&wl->mutex);
}
static void b43_periodic_tasks_setup(struct b43_wldev *dev)
{
struct delayed_work *work = &dev->periodic_work;
dev->periodic_state = 0;
INIT_DELAYED_WORK(work, b43_periodic_work_handler);
queue_delayed_work(dev->wl->hw->workqueue, work, 0);
}
/* Validate access to the chip (SHM) */
static int b43_validate_chipaccess(struct b43_wldev *dev)
{
u32 value;
u32 shm_backup;
shm_backup = b43_shm_read32(dev, B43_SHM_SHARED, 0);
b43_shm_write32(dev, B43_SHM_SHARED, 0, 0xAA5555AA);
if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0xAA5555AA)
goto error;
b43_shm_write32(dev, B43_SHM_SHARED, 0, 0x55AAAA55);
if (b43_shm_read32(dev, B43_SHM_SHARED, 0) != 0x55AAAA55)
goto error;
b43_shm_write32(dev, B43_SHM_SHARED, 0, shm_backup);
value = b43_read32(dev, B43_MMIO_MACCTL);
if ((value | B43_MACCTL_GMODE) !=
(B43_MACCTL_GMODE | B43_MACCTL_IHR_ENABLED))
goto error;
value = b43_read32(dev, B43_MMIO_GEN_IRQ_REASON);
if (value)
goto error;
return 0;
error:
b43err(dev->wl, "Failed to validate the chipaccess\n");
return -ENODEV;
}
static void b43_security_init(struct b43_wldev *dev)
{
dev->max_nr_keys = (dev->dev->id.revision >= 5) ? 58 : 20;
B43_WARN_ON(dev->max_nr_keys > ARRAY_SIZE(dev->key));
dev->ktp = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_KTP);
/* KTP is a word address, but we address SHM bytewise.
* So multiply by two.
*/
dev->ktp *= 2;
if (dev->dev->id.revision >= 5) {
/* Number of RCMTA address slots */
b43_write16(dev, B43_MMIO_RCMTA_COUNT, dev->max_nr_keys - 8);
}
b43_clear_keys(dev);
}
static int b43_rng_read(struct hwrng *rng, u32 * data)
{
struct b43_wl *wl = (struct b43_wl *)rng->priv;
unsigned long flags;
/* Don't take wl->mutex here, as it could deadlock with
* hwrng internal locking. It's not needed to take
* wl->mutex here, anyway. */
spin_lock_irqsave(&wl->irq_lock, flags);
*data = b43_read16(wl->current_dev, B43_MMIO_RNG);
spin_unlock_irqrestore(&wl->irq_lock, flags);
return (sizeof(u16));
}
static void b43_rng_exit(struct b43_wl *wl)
{
if (wl->rng_initialized)
hwrng_unregister(&wl->rng);
}
static int b43_rng_init(struct b43_wl *wl)
{
int err;
snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name),
"%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy));
wl->rng.name = wl->rng_name;
wl->rng.data_read = b43_rng_read;
wl->rng.priv = (unsigned long)wl;
wl->rng_initialized = 1;
err = hwrng_register(&wl->rng);
if (err) {
wl->rng_initialized = 0;
b43err(wl, "Failed to register the random "
"number generator (%d)\n", err);
}
return err;
}
static int b43_op_tx(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_tx_control *ctl)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
int err = -ENODEV;
unsigned long flags;
if (unlikely(!dev))
goto out;
if (unlikely(b43_status(dev) < B43_STAT_STARTED))
goto out;
/* DMA-TX is done without a global lock. */
if (b43_using_pio(dev)) {
spin_lock_irqsave(&wl->irq_lock, flags);
err = b43_pio_tx(dev, skb, ctl);
spin_unlock_irqrestore(&wl->irq_lock, flags);
} else
err = b43_dma_tx(dev, skb, ctl);
out:
if (unlikely(err))
return NETDEV_TX_BUSY;
return NETDEV_TX_OK;
}
static int b43_op_conf_tx(struct ieee80211_hw *hw,
int queue,
const struct ieee80211_tx_queue_params *params)
{
return 0;
}
static int b43_op_get_tx_stats(struct ieee80211_hw *hw,
struct ieee80211_tx_queue_stats *stats)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
int err = -ENODEV;
if (!dev)
goto out;
spin_lock_irqsave(&wl->irq_lock, flags);
if (likely(b43_status(dev) >= B43_STAT_STARTED)) {
if (b43_using_pio(dev))
b43_pio_get_tx_stats(dev, stats);
else
b43_dma_get_tx_stats(dev, stats);
err = 0;
}
spin_unlock_irqrestore(&wl->irq_lock, flags);
out:
return err;
}
static int b43_op_get_stats(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
unsigned long flags;
spin_lock_irqsave(&wl->irq_lock, flags);
memcpy(stats, &wl->ieee_stats, sizeof(*stats));
spin_unlock_irqrestore(&wl->irq_lock, flags);
return 0;
}
static const char *phymode_to_string(unsigned int phymode)
{
switch (phymode) {
case B43_PHYMODE_A:
return "A";
case B43_PHYMODE_B:
return "B";
case B43_PHYMODE_G:
return "G";
default:
B43_WARN_ON(1);
}
return "";
}
static int find_wldev_for_phymode(struct b43_wl *wl,
unsigned int phymode,
struct b43_wldev **dev, bool * gmode)
{
struct b43_wldev *d;
list_for_each_entry(d, &wl->devlist, list) {
if (d->phy.possible_phymodes & phymode) {
/* Ok, this device supports the PHY-mode.
* Now figure out how the gmode bit has to be
* set to support it. */
if (phymode == B43_PHYMODE_A)
*gmode = 0;
else
*gmode = 1;
*dev = d;
return 0;
}
}
return -ESRCH;
}
static void b43_put_phy_into_reset(struct b43_wldev *dev)
{
struct ssb_device *sdev = dev->dev;
u32 tmslow;
tmslow = ssb_read32(sdev, SSB_TMSLOW);
tmslow &= ~B43_TMSLOW_GMODE;
tmslow |= B43_TMSLOW_PHYRESET;
tmslow |= SSB_TMSLOW_FGC;
ssb_write32(sdev, SSB_TMSLOW, tmslow);
msleep(1);
tmslow = ssb_read32(sdev, SSB_TMSLOW);
tmslow &= ~SSB_TMSLOW_FGC;
tmslow |= B43_TMSLOW_PHYRESET;
ssb_write32(sdev, SSB_TMSLOW, tmslow);
msleep(1);
}
/* Expects wl->mutex locked */
static int b43_switch_phymode(struct b43_wl *wl, unsigned int new_mode)
{
struct b43_wldev *up_dev;
struct b43_wldev *down_dev;
int err;
bool gmode = 0;
int prev_status;
err = find_wldev_for_phymode(wl, new_mode, &up_dev, &gmode);
if (err) {
b43err(wl, "Could not find a device for %s-PHY mode\n",
phymode_to_string(new_mode));
return err;
}
if ((up_dev == wl->current_dev) &&
(!!wl->current_dev->phy.gmode == !!gmode)) {
/* This device is already running. */
return 0;
}
b43dbg(wl, "Reconfiguring PHYmode to %s-PHY\n",
phymode_to_string(new_mode));
down_dev = wl->current_dev;
prev_status = b43_status(down_dev);
/* Shutdown the currently running core. */
if (prev_status >= B43_STAT_STARTED)
b43_wireless_core_stop(down_dev);
if (prev_status >= B43_STAT_INITIALIZED)
b43_wireless_core_exit(down_dev);
if (down_dev != up_dev) {
/* We switch to a different core, so we put PHY into
* RESET on the old core. */
b43_put_phy_into_reset(down_dev);
}
/* Now start the new core. */
up_dev->phy.gmode = gmode;
if (prev_status >= B43_STAT_INITIALIZED) {
err = b43_wireless_core_init(up_dev);
if (err) {
b43err(wl, "Fatal: Could not initialize device for "
"newly selected %s-PHY mode\n",
phymode_to_string(new_mode));
goto init_failure;
}
}
if (prev_status >= B43_STAT_STARTED) {
err = b43_wireless_core_start(up_dev);
if (err) {
b43err(wl, "Fatal: Coult not start device for "
"newly selected %s-PHY mode\n",
phymode_to_string(new_mode));
b43_wireless_core_exit(up_dev);
goto init_failure;
}
}
B43_WARN_ON(b43_status(up_dev) != prev_status);
wl->current_dev = up_dev;
return 0;
init_failure:
/* Whoops, failed to init the new core. No core is operating now. */
wl->current_dev = NULL;
return err;
}
static int b43_antenna_from_ieee80211(u8 antenna)
{
switch (antenna) {
case 0: /* default/diversity */
return B43_ANTENNA_DEFAULT;
case 1: /* Antenna 0 */
return B43_ANTENNA0;
case 2: /* Antenna 1 */
return B43_ANTENNA1;
default:
return B43_ANTENNA_DEFAULT;
}
}
static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
struct b43_phy *phy;
unsigned long flags;
unsigned int new_phymode = 0xFFFF;
int antenna_tx;
int antenna_rx;
int err = 0;
u32 savedirqs;
antenna_tx = b43_antenna_from_ieee80211(conf->antenna_sel_tx);
antenna_rx = b43_antenna_from_ieee80211(conf->antenna_sel_rx);
mutex_lock(&wl->mutex);
/* Switch the PHY mode (if necessary). */
switch (conf->phymode) {
case MODE_IEEE80211A:
new_phymode = B43_PHYMODE_A;
break;
case MODE_IEEE80211B:
new_phymode = B43_PHYMODE_B;
break;
case MODE_IEEE80211G:
new_phymode = B43_PHYMODE_G;
break;
default:
B43_WARN_ON(1);
}
err = b43_switch_phymode(wl, new_phymode);
if (err)
goto out_unlock_mutex;
dev = wl->current_dev;
phy = &dev->phy;
/* Disable IRQs while reconfiguring the device.
* This makes it possible to drop the spinlock throughout
* the reconfiguration process. */
spin_lock_irqsave(&wl->irq_lock, flags);
if (b43_status(dev) < B43_STAT_STARTED) {
spin_unlock_irqrestore(&wl->irq_lock, flags);
goto out_unlock_mutex;
}
savedirqs = b43_interrupt_disable(dev, B43_IRQ_ALL);
spin_unlock_irqrestore(&wl->irq_lock, flags);
b43_synchronize_irq(dev);
/* Switch to the requested channel.
* The firmware takes care of races with the TX handler. */
if (conf->channel_val != phy->channel)
b43_radio_selectchannel(dev, conf->channel_val, 0);
/* Enable/Disable ShortSlot timing. */
if ((!!(conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)) !=
dev->short_slot) {
B43_WARN_ON(phy->type != B43_PHYTYPE_G);
if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME)
b43_short_slot_timing_enable(dev);
else
b43_short_slot_timing_disable(dev);
}
dev->wl->radiotap_enabled = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
/* Adjust the desired TX power level. */
if (conf->power_level != 0) {
if (conf->power_level != phy->power_level) {
phy->power_level = conf->power_level;
b43_phy_xmitpower(dev);
}
}
/* Antennas for RX and management frame TX. */
b43_mgmtframe_txantenna(dev, antenna_tx);
b43_set_rx_antenna(dev, antenna_rx);
/* Update templates for AP mode. */
if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
b43_set_beacon_int(dev, conf->beacon_int);
if (!!conf->radio_enabled != phy->radio_on) {
if (conf->radio_enabled) {
b43_radio_turn_on(dev);
b43info(dev->wl, "Radio turned on by software\n");
if (!dev->radio_hw_enable) {
b43info(dev->wl, "The hardware RF-kill button "
"still turns the radio physically off. "
"Press the button to turn it on.\n");
}
} else {
b43_radio_turn_off(dev, 0);
b43info(dev->wl, "Radio turned off by software\n");
}
}
spin_lock_irqsave(&wl->irq_lock, flags);
b43_interrupt_enable(dev, savedirqs);
mmiowb();
spin_unlock_irqrestore(&wl->irq_lock, flags);
out_unlock_mutex:
mutex_unlock(&wl->mutex);
return err;
}
static int b43_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
const u8 *local_addr, const u8 *addr,
struct ieee80211_key_conf *key)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
unsigned long flags;
u8 algorithm;
u8 index;
int err;
DECLARE_MAC_BUF(mac);
if (modparam_nohwcrypt)
return -ENOSPC; /* User disabled HW-crypto */
mutex_lock(&wl->mutex);
spin_lock_irqsave(&wl->irq_lock, flags);
dev = wl->current_dev;
err = -ENODEV;
if (!dev || b43_status(dev) < B43_STAT_INITIALIZED)
goto out_unlock;
err = -EINVAL;
switch (key->alg) {
case ALG_WEP:
if (key->keylen == 5)
algorithm = B43_SEC_ALGO_WEP40;
else
algorithm = B43_SEC_ALGO_WEP104;
break;
case ALG_TKIP:
algorithm = B43_SEC_ALGO_TKIP;
break;
case ALG_CCMP:
algorithm = B43_SEC_ALGO_AES;
break;
default:
B43_WARN_ON(1);
goto out_unlock;
}
index = (u8) (key->keyidx);
if (index > 3)
goto out_unlock;
switch (cmd) {
case SET_KEY:
if (algorithm == B43_SEC_ALGO_TKIP) {
/* FIXME: No TKIP hardware encryption for now. */
err = -EOPNOTSUPP;
goto out_unlock;
}
if (is_broadcast_ether_addr(addr)) {
/* addr is FF:FF:FF:FF:FF:FF for default keys */
err = b43_key_write(dev, index, algorithm,
key->key, key->keylen, NULL, key);
} else {
/*
* either pairwise key or address is 00:00:00:00:00:00
* for transmit-only keys
*/
err = b43_key_write(dev, -1, algorithm,
key->key, key->keylen, addr, key);
}
if (err)
goto out_unlock;
if (algorithm == B43_SEC_ALGO_WEP40 ||
algorithm == B43_SEC_ALGO_WEP104) {
b43_hf_write(dev, b43_hf_read(dev) | B43_HF_USEDEFKEYS);
} else {
b43_hf_write(dev,
b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
}
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
break;
case DISABLE_KEY: {
err = b43_key_clear(dev, key->hw_key_idx);
if (err)
goto out_unlock;
break;
}
default:
B43_WARN_ON(1);
}
out_unlock:
spin_unlock_irqrestore(&wl->irq_lock, flags);
mutex_unlock(&wl->mutex);
if (!err) {
b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
"mac: %s\n",
cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
print_mac(mac, addr));
}
return err;
}
static void b43_op_configure_filter(struct ieee80211_hw *hw,
unsigned int changed, unsigned int *fflags,
int mc_count, struct dev_addr_list *mc_list)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
if (!dev) {
*fflags = 0;
return;
}
spin_lock_irqsave(&wl->irq_lock, flags);
*fflags &= FIF_PROMISC_IN_BSS |
FIF_ALLMULTI |
FIF_FCSFAIL |
FIF_PLCPFAIL |
FIF_CONTROL |
FIF_OTHER_BSS |
FIF_BCN_PRBRESP_PROMISC;
changed &= FIF_PROMISC_IN_BSS |
FIF_ALLMULTI |
FIF_FCSFAIL |
FIF_PLCPFAIL |
FIF_CONTROL |
FIF_OTHER_BSS |
FIF_BCN_PRBRESP_PROMISC;
wl->filter_flags = *fflags;
if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
b43_adjust_opmode(dev);
spin_unlock_irqrestore(&wl->irq_lock, flags);
}
static int b43_op_config_interface(struct ieee80211_hw *hw,
int if_id,
struct ieee80211_if_conf *conf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
if (!dev)
return -ENODEV;
mutex_lock(&wl->mutex);
spin_lock_irqsave(&wl->irq_lock, flags);
B43_WARN_ON(wl->if_id != if_id);
if (conf->bssid)
memcpy(wl->bssid, conf->bssid, ETH_ALEN);
else
memset(wl->bssid, 0, ETH_ALEN);
if (b43_status(dev) >= B43_STAT_INITIALIZED) {
if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
b43_set_ssid(dev, conf->ssid, conf->ssid_len);
if (conf->beacon)
b43_refresh_templates(dev, conf->beacon);
}
b43_write_mac_bssid_templates(dev);
}
spin_unlock_irqrestore(&wl->irq_lock, flags);
mutex_unlock(&wl->mutex);
return 0;
}
/* Locking: wl->mutex */
static void b43_wireless_core_stop(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
unsigned long flags;
if (b43_status(dev) < B43_STAT_STARTED)
return;
/* Disable and sync interrupts. We must do this before than
* setting the status to INITIALIZED, as the interrupt handler
* won't care about IRQs then. */
spin_lock_irqsave(&wl->irq_lock, flags);
dev->irq_savedstate = b43_interrupt_disable(dev, B43_IRQ_ALL);
b43_read32(dev, B43_MMIO_GEN_IRQ_MASK); /* flush */
spin_unlock_irqrestore(&wl->irq_lock, flags);
b43_synchronize_irq(dev);
b43_set_status(dev, B43_STAT_INITIALIZED);
mutex_unlock(&wl->mutex);
/* Must unlock as it would otherwise deadlock. No races here.
* Cancel the possibly running self-rearming periodic work. */
cancel_delayed_work_sync(&dev->periodic_work);
mutex_lock(&wl->mutex);
ieee80211_stop_queues(wl->hw); //FIXME this could cause a deadlock, as mac80211 seems buggy.
b43_mac_suspend(dev);
free_irq(dev->dev->irq, dev);
b43dbg(wl, "Wireless interface stopped\n");
}
/* Locking: wl->mutex */
static int b43_wireless_core_start(struct b43_wldev *dev)
{
int err;
B43_WARN_ON(b43_status(dev) != B43_STAT_INITIALIZED);
drain_txstatus_queue(dev);
err = request_irq(dev->dev->irq, b43_interrupt_handler,
IRQF_SHARED, KBUILD_MODNAME, dev);
if (err) {
b43err(dev->wl, "Cannot request IRQ-%d\n", dev->dev->irq);
goto out;
}
/* We are ready to run. */
b43_set_status(dev, B43_STAT_STARTED);
/* Start data flow (TX/RX). */
b43_mac_enable(dev);
b43_interrupt_enable(dev, dev->irq_savedstate);
ieee80211_start_queues(dev->wl->hw);
/* Start maintainance work */
b43_periodic_tasks_setup(dev);
b43dbg(dev->wl, "Wireless interface started\n");
out:
return err;
}
/* Get PHY and RADIO versioning numbers */
static int b43_phy_versioning(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
u32 tmp;
u8 analog_type;
u8 phy_type;
u8 phy_rev;
u16 radio_manuf;
u16 radio_ver;
u16 radio_rev;
int unsupported = 0;
/* Get PHY versioning */
tmp = b43_read16(dev, B43_MMIO_PHY_VER);
analog_type = (tmp & B43_PHYVER_ANALOG) >> B43_PHYVER_ANALOG_SHIFT;
phy_type = (tmp & B43_PHYVER_TYPE) >> B43_PHYVER_TYPE_SHIFT;
phy_rev = (tmp & B43_PHYVER_VERSION);
switch (phy_type) {
case B43_PHYTYPE_A:
if (phy_rev >= 4)
unsupported = 1;
break;
case B43_PHYTYPE_B:
if (phy_rev != 2 && phy_rev != 4 && phy_rev != 6
&& phy_rev != 7)
unsupported = 1;
break;
case B43_PHYTYPE_G:
if (phy_rev > 9)
unsupported = 1;
break;
default:
unsupported = 1;
};
if (unsupported) {
b43err(dev->wl, "FOUND UNSUPPORTED PHY "
"(Analog %u, Type %u, Revision %u)\n",
analog_type, phy_type, phy_rev);
return -EOPNOTSUPP;
}
b43dbg(dev->wl, "Found PHY: Analog %u, Type %u, Revision %u\n",
analog_type, phy_type, phy_rev);
/* Get RADIO versioning */
if (dev->dev->bus->chip_id == 0x4317) {
if (dev->dev->bus->chip_rev == 0)
tmp = 0x3205017F;
else if (dev->dev->bus->chip_rev == 1)
tmp = 0x4205017F;
else
tmp = 0x5205017F;
} else {
b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
tmp = b43_read16(dev, B43_MMIO_RADIO_DATA_HIGH);
tmp <<= 16;
b43_write16(dev, B43_MMIO_RADIO_CONTROL, B43_RADIOCTL_ID);
tmp |= b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
}
radio_manuf = (tmp & 0x00000FFF);
radio_ver = (tmp & 0x0FFFF000) >> 12;
radio_rev = (tmp & 0xF0000000) >> 28;
switch (phy_type) {
case B43_PHYTYPE_A:
if (radio_ver != 0x2060)
unsupported = 1;
if (radio_rev != 1)
unsupported = 1;
if (radio_manuf != 0x17F)
unsupported = 1;
break;
case B43_PHYTYPE_B:
if ((radio_ver & 0xFFF0) != 0x2050)
unsupported = 1;
break;
case B43_PHYTYPE_G:
if (radio_ver != 0x2050)
unsupported = 1;
break;
default:
B43_WARN_ON(1);
}
if (unsupported) {
b43err(dev->wl, "FOUND UNSUPPORTED RADIO "
"(Manuf 0x%X, Version 0x%X, Revision %u)\n",
radio_manuf, radio_ver, radio_rev);
return -EOPNOTSUPP;
}
b43dbg(dev->wl, "Found Radio: Manuf 0x%X, Version 0x%X, Revision %u\n",
radio_manuf, radio_ver, radio_rev);
phy->radio_manuf = radio_manuf;
phy->radio_ver = radio_ver;
phy->radio_rev = radio_rev;
phy->analog = analog_type;
phy->type = phy_type;
phy->rev = phy_rev;
return 0;
}
static void setup_struct_phy_for_init(struct b43_wldev *dev,
struct b43_phy *phy)
{
struct b43_txpower_lo_control *lo;
int i;
memset(phy->minlowsig, 0xFF, sizeof(phy->minlowsig));
memset(phy->minlowsigpos, 0, sizeof(phy->minlowsigpos));
/* Flags */
phy->locked = 0;
phy->aci_enable = 0;
phy->aci_wlan_automatic = 0;
phy->aci_hw_rssi = 0;
phy->radio_off_context.valid = 0;
lo = phy->lo_control;
if (lo) {
memset(lo, 0, sizeof(*(phy->lo_control)));
lo->rebuild = 1;
lo->tx_bias = 0xFF;
}
phy->max_lb_gain = 0;
phy->trsw_rx_gain = 0;
phy->txpwr_offset = 0;
/* NRSSI */
phy->nrssislope = 0;
for (i = 0; i < ARRAY_SIZE(phy->nrssi); i++)
phy->nrssi[i] = -1000;
for (i = 0; i < ARRAY_SIZE(phy->nrssi_lt); i++)
phy->nrssi_lt[i] = i;
phy->lofcal = 0xFFFF;
phy->initval = 0xFFFF;
spin_lock_init(&phy->lock);
phy->interfmode = B43_INTERFMODE_NONE;
phy->channel = 0xFF;
phy->hardware_power_control = !!modparam_hwpctl;
/* PHY TX errors counter. */
atomic_set(&phy->txerr_cnt, B43_PHY_TX_BADNESS_LIMIT);
/* OFDM-table address caching. */
phy->ofdmtab_addr_direction = B43_OFDMTAB_DIRECTION_UNKNOWN;
}
static void setup_struct_wldev_for_init(struct b43_wldev *dev)
{
/* Flags */
dev->reg124_set_0x4 = 0;
/* Assume the radio is enabled. If it's not enabled, the state will
* immediately get fixed on the first periodic work run. */
dev->radio_hw_enable = 1;
/* Stats */
memset(&dev->stats, 0, sizeof(dev->stats));
setup_struct_phy_for_init(dev, &dev->phy);
/* IRQ related flags */
dev->irq_reason = 0;
memset(dev->dma_reason, 0, sizeof(dev->dma_reason));
dev->irq_savedstate = B43_IRQ_MASKTEMPLATE;
dev->mac_suspended = 1;
/* Noise calculation context */
memset(&dev->noisecalc, 0, sizeof(dev->noisecalc));
}
static void b43_bluetooth_coext_enable(struct b43_wldev *dev)
{
struct ssb_sprom *sprom = &dev->dev->bus->sprom;
u32 hf;
if (!(sprom->boardflags_lo & B43_BFL_BTCOEXIST))
return;
if (dev->phy.type != B43_PHYTYPE_B && !dev->phy.gmode)
return;
hf = b43_hf_read(dev);
if (sprom->boardflags_lo & B43_BFL_BTCMOD)
hf |= B43_HF_BTCOEXALT;
else
hf |= B43_HF_BTCOEX;
b43_hf_write(dev, hf);
//TODO
}
static void b43_bluetooth_coext_disable(struct b43_wldev *dev)
{ //TODO
}
static void b43_imcfglo_timeouts_workaround(struct b43_wldev *dev)
{
#ifdef CONFIG_SSB_DRIVER_PCICORE
struct ssb_bus *bus = dev->dev->bus;
u32 tmp;
if (bus->pcicore.dev &&
bus->pcicore.dev->id.coreid == SSB_DEV_PCI &&
bus->pcicore.dev->id.revision <= 5) {
/* IMCFGLO timeouts workaround. */
tmp = ssb_read32(dev->dev, SSB_IMCFGLO);
tmp &= ~SSB_IMCFGLO_REQTO;
tmp &= ~SSB_IMCFGLO_SERTO;
switch (bus->bustype) {
case SSB_BUSTYPE_PCI:
case SSB_BUSTYPE_PCMCIA:
tmp |= 0x32;
break;
case SSB_BUSTYPE_SSB:
tmp |= 0x53;
break;
}
ssb_write32(dev->dev, SSB_IMCFGLO, tmp);
}
#endif /* CONFIG_SSB_DRIVER_PCICORE */
}
/* Write the short and long frame retry limit values. */
static void b43_set_retry_limits(struct b43_wldev *dev,
unsigned int short_retry,
unsigned int long_retry)
{
/* The retry limit is a 4-bit counter. Enforce this to avoid overflowing
* the chip-internal counter. */
short_retry = min(short_retry, (unsigned int)0xF);
long_retry = min(long_retry, (unsigned int)0xF);
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_SRLIMIT,
short_retry);
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_LRLIMIT,
long_retry);
}
/* Shutdown a wireless core */
/* Locking: wl->mutex */
static void b43_wireless_core_exit(struct b43_wldev *dev)
{
struct b43_phy *phy = &dev->phy;
B43_WARN_ON(b43_status(dev) > B43_STAT_INITIALIZED);
if (b43_status(dev) != B43_STAT_INITIALIZED)
return;
b43_set_status(dev, B43_STAT_UNINIT);
b43_leds_exit(dev);
b43_rng_exit(dev->wl);
b43_pio_free(dev);
b43_dma_free(dev);
b43_chip_exit(dev);
b43_radio_turn_off(dev, 1);
b43_switch_analog(dev, 0);
if (phy->dyn_tssi_tbl)
kfree(phy->tssi2dbm);
kfree(phy->lo_control);
phy->lo_control = NULL;
ssb_device_disable(dev->dev, 0);
ssb_bus_may_powerdown(dev->dev->bus);
}
/* Initialize a wireless core */
static int b43_wireless_core_init(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
struct ssb_bus *bus = dev->dev->bus;
struct ssb_sprom *sprom = &bus->sprom;
struct b43_phy *phy = &dev->phy;
int err;
u32 hf, tmp;
B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
err = ssb_bus_powerup(bus, 0);
if (err)
goto out;
if (!ssb_device_is_enabled(dev->dev)) {
tmp = phy->gmode ? B43_TMSLOW_GMODE : 0;
b43_wireless_core_reset(dev, tmp);
}
if ((phy->type == B43_PHYTYPE_B) || (phy->type == B43_PHYTYPE_G)) {
phy->lo_control =
kzalloc(sizeof(*(phy->lo_control)), GFP_KERNEL);
if (!phy->lo_control) {
err = -ENOMEM;
goto err_busdown;
}
}
setup_struct_wldev_for_init(dev);
err = b43_phy_init_tssi2dbm_table(dev);
if (err)
goto err_kfree_lo_control;
/* Enable IRQ routing to this device. */
ssb_pcicore_dev_irqvecs_enable(&bus->pcicore, dev->dev);
b43_imcfglo_timeouts_workaround(dev);
b43_bluetooth_coext_disable(dev);
b43_phy_early_init(dev);
err = b43_chip_init(dev);
if (err)
goto err_kfree_tssitbl;
b43_shm_write16(dev, B43_SHM_SHARED,
B43_SHM_SH_WLCOREREV, dev->dev->id.revision);
hf = b43_hf_read(dev);
if (phy->type == B43_PHYTYPE_G) {
hf |= B43_HF_SYMW;
if (phy->rev == 1)
hf |= B43_HF_GDCW;
if (sprom->boardflags_lo & B43_BFL_PACTRL)
hf |= B43_HF_OFDMPABOOST;
} else if (phy->type == B43_PHYTYPE_B) {
hf |= B43_HF_SYMW;
if (phy->rev >= 2 && phy->radio_ver == 0x2050)
hf &= ~B43_HF_GDCW;
}
b43_hf_write(dev, hf);
b43_set_retry_limits(dev, B43_DEFAULT_SHORT_RETRY_LIMIT,
B43_DEFAULT_LONG_RETRY_LIMIT);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_SFFBLIM, 3);
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_LFFBLIM, 2);
/* Disable sending probe responses from firmware.
* Setting the MaxTime to one usec will always trigger
* a timeout, so we never send any probe resp.
* A timeout of zero is infinite. */
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRMAXTIME, 1);
b43_rate_memory_init(dev);
/* Minimum Contention Window */
if (phy->type == B43_PHYTYPE_B) {
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0x1F);
} else {
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MINCONT, 0xF);
}
/* Maximum Contention Window */
b43_shm_write16(dev, B43_SHM_SCRATCH, B43_SHM_SC_MAXCONT, 0x3FF);
do {
if (b43_using_pio(dev)) {
err = b43_pio_init(dev);
} else {
err = b43_dma_init(dev);
if (!err)
b43_qos_init(dev);
}
} while (err == -EAGAIN);
if (err)
goto err_chip_exit;
//FIXME
#if 1
b43_write16(dev, 0x0612, 0x0050);
b43_shm_write16(dev, B43_SHM_SHARED, 0x0416, 0x0050);
b43_shm_write16(dev, B43_SHM_SHARED, 0x0414, 0x01F4);
#endif
b43_bluetooth_coext_enable(dev);
ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
memset(wl->bssid, 0, ETH_ALEN);
memset(wl->mac_addr, 0, ETH_ALEN);
b43_upload_card_macaddress(dev);
b43_security_init(dev);
b43_rng_init(wl);
b43_set_status(dev, B43_STAT_INITIALIZED);
b43_leds_init(dev);
out:
return err;
err_chip_exit:
b43_chip_exit(dev);
err_kfree_tssitbl:
if (phy->dyn_tssi_tbl)
kfree(phy->tssi2dbm);
err_kfree_lo_control:
kfree(phy->lo_control);
phy->lo_control = NULL;
err_busdown:
ssb_bus_may_powerdown(bus);
B43_WARN_ON(b43_status(dev) != B43_STAT_UNINIT);
return err;
}
static int b43_op_add_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
unsigned long flags;
int err = -EOPNOTSUPP;
/* TODO: allow WDS/AP devices to coexist */
if (conf->type != IEEE80211_IF_TYPE_AP &&
conf->type != IEEE80211_IF_TYPE_STA &&
conf->type != IEEE80211_IF_TYPE_WDS &&
conf->type != IEEE80211_IF_TYPE_IBSS)
return -EOPNOTSUPP;
mutex_lock(&wl->mutex);
if (wl->operating)
goto out_mutex_unlock;
b43dbg(wl, "Adding Interface type %d\n", conf->type);
dev = wl->current_dev;
wl->operating = 1;
wl->if_id = conf->if_id;
wl->if_type = conf->type;
memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
spin_lock_irqsave(&wl->irq_lock, flags);
b43_adjust_opmode(dev);
b43_upload_card_macaddress(dev);
spin_unlock_irqrestore(&wl->irq_lock, flags);
err = 0;
out_mutex_unlock:
mutex_unlock(&wl->mutex);
return err;
}
static void b43_op_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
b43dbg(wl, "Removing Interface type %d\n", conf->type);
mutex_lock(&wl->mutex);
B43_WARN_ON(!wl->operating);
B43_WARN_ON(wl->if_id != conf->if_id);
wl->operating = 0;
spin_lock_irqsave(&wl->irq_lock, flags);
b43_adjust_opmode(dev);
memset(wl->mac_addr, 0, ETH_ALEN);
b43_upload_card_macaddress(dev);
spin_unlock_irqrestore(&wl->irq_lock, flags);
mutex_unlock(&wl->mutex);
}
static int b43_op_start(struct ieee80211_hw *hw)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
int did_init = 0;
int err = 0;
/* First register RFkill.
* LEDs that are registered later depend on it. */
b43_rfkill_init(dev);
mutex_lock(&wl->mutex);
if (b43_status(dev) < B43_STAT_INITIALIZED) {
err = b43_wireless_core_init(dev);
if (err)
goto out_mutex_unlock;
did_init = 1;
}
if (b43_status(dev) < B43_STAT_STARTED) {
err = b43_wireless_core_start(dev);
if (err) {
if (did_init)
b43_wireless_core_exit(dev);
goto out_mutex_unlock;
}
}
out_mutex_unlock:
mutex_unlock(&wl->mutex);
return err;
}
static void b43_op_stop(struct ieee80211_hw *hw)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
b43_rfkill_exit(dev);
mutex_lock(&wl->mutex);
if (b43_status(dev) >= B43_STAT_STARTED)
b43_wireless_core_stop(dev);
b43_wireless_core_exit(dev);
mutex_unlock(&wl->mutex);
}
static int b43_op_set_retry_limit(struct ieee80211_hw *hw,
u32 short_retry_limit, u32 long_retry_limit)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev;
int err = 0;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (unlikely(!dev || (b43_status(dev) < B43_STAT_INITIALIZED))) {
err = -ENODEV;
goto out_unlock;
}
b43_set_retry_limits(dev, short_retry_limit, long_retry_limit);
out_unlock:
mutex_unlock(&wl->mutex);
return err;
}
static const struct ieee80211_ops b43_hw_ops = {
.tx = b43_op_tx,
.conf_tx = b43_op_conf_tx,
.add_interface = b43_op_add_interface,
.remove_interface = b43_op_remove_interface,
.config = b43_op_config,
.config_interface = b43_op_config_interface,
.configure_filter = b43_op_configure_filter,
.set_key = b43_op_set_key,
.get_stats = b43_op_get_stats,
.get_tx_stats = b43_op_get_tx_stats,
.start = b43_op_start,
.stop = b43_op_stop,
.set_retry_limit = b43_op_set_retry_limit,
};
/* Hard-reset the chip. Do not call this directly.
* Use b43_controller_restart()
*/
static void b43_chip_reset(struct work_struct *work)
{
struct b43_wldev *dev =
container_of(work, struct b43_wldev, restart_work);
struct b43_wl *wl = dev->wl;
int err = 0;
int prev_status;
mutex_lock(&wl->mutex);
prev_status = b43_status(dev);
/* Bring the device down... */
if (prev_status >= B43_STAT_STARTED)
b43_wireless_core_stop(dev);
if (prev_status >= B43_STAT_INITIALIZED)
b43_wireless_core_exit(dev);
/* ...and up again. */
if (prev_status >= B43_STAT_INITIALIZED) {
err = b43_wireless_core_init(dev);
if (err)
goto out;
}
if (prev_status >= B43_STAT_STARTED) {
err = b43_wireless_core_start(dev);
if (err) {
b43_wireless_core_exit(dev);
goto out;
}
}
out:
mutex_unlock(&wl->mutex);
if (err)
b43err(wl, "Controller restart FAILED\n");
else
b43info(wl, "Controller restarted\n");
}
static int b43_setup_modes(struct b43_wldev *dev,
int have_aphy, int have_bphy, int have_gphy)
{
struct ieee80211_hw *hw = dev->wl->hw;
struct ieee80211_hw_mode *mode;
struct b43_phy *phy = &dev->phy;
int cnt = 0;
int err;
/*FIXME: Don't tell ieee80211 about an A-PHY, because we currently don't support A-PHY. */
have_aphy = 0;
phy->possible_phymodes = 0;
for (; 1; cnt++) {
if (have_aphy) {
B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
mode = &phy->hwmodes[cnt];
mode->mode = MODE_IEEE80211A;
mode->num_channels = b43_a_chantable_size;
mode->channels = b43_a_chantable;
mode->num_rates = b43_a_ratetable_size;
mode->rates = b43_a_ratetable;
err = ieee80211_register_hwmode(hw, mode);
if (err)
return err;
phy->possible_phymodes |= B43_PHYMODE_A;
have_aphy = 0;
continue;
}
if (have_bphy) {
B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
mode = &phy->hwmodes[cnt];
mode->mode = MODE_IEEE80211B;
mode->num_channels = b43_bg_chantable_size;
mode->channels = b43_bg_chantable;
mode->num_rates = b43_b_ratetable_size;
mode->rates = b43_b_ratetable;
err = ieee80211_register_hwmode(hw, mode);
if (err)
return err;
phy->possible_phymodes |= B43_PHYMODE_B;
have_bphy = 0;
continue;
}
if (have_gphy) {
B43_WARN_ON(cnt >= B43_MAX_PHYHWMODES);
mode = &phy->hwmodes[cnt];
mode->mode = MODE_IEEE80211G;
mode->num_channels = b43_bg_chantable_size;
mode->channels = b43_bg_chantable;
mode->num_rates = b43_g_ratetable_size;
mode->rates = b43_g_ratetable;
err = ieee80211_register_hwmode(hw, mode);
if (err)
return err;
phy->possible_phymodes |= B43_PHYMODE_G;
have_gphy = 0;
continue;
}
break;
}
return 0;
}
static void b43_wireless_core_detach(struct b43_wldev *dev)
{
/* We release firmware that late to not be required to re-request
* is all the time when we reinit the core. */
b43_release_firmware(dev);
}
static int b43_wireless_core_attach(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
struct ssb_bus *bus = dev->dev->bus;
struct pci_dev *pdev = bus->host_pci;
int err;
int have_aphy = 0, have_bphy = 0, have_gphy = 0;
u32 tmp;
/* Do NOT do any device initialization here.
* Do it in wireless_core_init() instead.
* This function is for gathering basic information about the HW, only.
* Also some structs may be set up here. But most likely you want to have
* that in core_init(), too.
*/
err = ssb_bus_powerup(bus, 0);
if (err) {
b43err(wl, "Bus powerup failed\n");
goto out;
}
/* Get the PHY type. */
if (dev->dev->id.revision >= 5) {
u32 tmshigh;
tmshigh = ssb_read32(dev->dev, SSB_TMSHIGH);
have_aphy = !!(tmshigh & B43_TMSHIGH_APHY);
have_gphy = !!(tmshigh & B43_TMSHIGH_GPHY);
if (!have_aphy && !have_gphy)
have_bphy = 1;
} else if (dev->dev->id.revision == 4) {
have_gphy = 1;
have_aphy = 1;
} else
have_bphy = 1;
dev->phy.gmode = (have_gphy || have_bphy);
tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
b43_wireless_core_reset(dev, tmp);
err = b43_phy_versioning(dev);
if (err)
goto err_powerdown;
/* Check if this device supports multiband. */
if (!pdev ||
(pdev->device != 0x4312 &&
pdev->device != 0x4319 && pdev->device != 0x4324)) {
/* No multiband support. */
have_aphy = 0;
have_bphy = 0;
have_gphy = 0;
switch (dev->phy.type) {
case B43_PHYTYPE_A:
have_aphy = 1;
break;
case B43_PHYTYPE_B:
have_bphy = 1;
break;
case B43_PHYTYPE_G:
have_gphy = 1;
break;
default:
B43_WARN_ON(1);
}
}
dev->phy.gmode = (have_gphy || have_bphy);
tmp = dev->phy.gmode ? B43_TMSLOW_GMODE : 0;
b43_wireless_core_reset(dev, tmp);
err = b43_validate_chipaccess(dev);
if (err)
goto err_powerdown;
err = b43_setup_modes(dev, have_aphy, have_bphy, have_gphy);
if (err)
goto err_powerdown;
/* Now set some default "current_dev" */
if (!wl->current_dev)
wl->current_dev = dev;
INIT_WORK(&dev->restart_work, b43_chip_reset);
b43_radio_turn_off(dev, 1);
b43_switch_analog(dev, 0);
ssb_device_disable(dev->dev, 0);
ssb_bus_may_powerdown(bus);
out:
return err;
err_powerdown:
ssb_bus_may_powerdown(bus);
return err;
}
static void b43_one_core_detach(struct ssb_device *dev)
{
struct b43_wldev *wldev;
struct b43_wl *wl;
wldev = ssb_get_drvdata(dev);
wl = wldev->wl;
cancel_work_sync(&wldev->restart_work);
b43_debugfs_remove_device(wldev);
b43_wireless_core_detach(wldev);
list_del(&wldev->list);
wl->nr_devs--;
ssb_set_drvdata(dev, NULL);
kfree(wldev);
}
static int b43_one_core_attach(struct ssb_device *dev, struct b43_wl *wl)
{
struct b43_wldev *wldev;
struct pci_dev *pdev;
int err = -ENOMEM;
if (!list_empty(&wl->devlist)) {
/* We are not the first core on this chip. */
pdev = dev->bus->host_pci;
/* Only special chips support more than one wireless
* core, although some of the other chips have more than
* one wireless core as well. Check for this and
* bail out early.
*/
if (!pdev ||
((pdev->device != 0x4321) &&
(pdev->device != 0x4313) && (pdev->device != 0x431A))) {
b43dbg(wl, "Ignoring unconnected 802.11 core\n");
return -ENODEV;
}
}
wldev = kzalloc(sizeof(*wldev), GFP_KERNEL);
if (!wldev)
goto out;
wldev->dev = dev;
wldev->wl = wl;
b43_set_status(wldev, B43_STAT_UNINIT);
wldev->bad_frames_preempt = modparam_bad_frames_preempt;
tasklet_init(&wldev->isr_tasklet,
(void (*)(unsigned long))b43_interrupt_tasklet,
(unsigned long)wldev);
if (modparam_pio)
wldev->__using_pio = 1;
INIT_LIST_HEAD(&wldev->list);
err = b43_wireless_core_attach(wldev);
if (err)
goto err_kfree_wldev;
list_add(&wldev->list, &wl->devlist);
wl->nr_devs++;
ssb_set_drvdata(dev, wldev);
b43_debugfs_add_device(wldev);
out:
return err;
err_kfree_wldev:
kfree(wldev);
return err;
}
static void b43_sprom_fixup(struct ssb_bus *bus)
{
/* boardflags workarounds */
if (bus->boardinfo.vendor == SSB_BOARDVENDOR_DELL &&
bus->chip_id == 0x4301 && bus->boardinfo.rev == 0x74)
bus->sprom.boardflags_lo |= B43_BFL_BTCOEXIST;
if (bus->boardinfo.vendor == PCI_VENDOR_ID_APPLE &&
bus->boardinfo.type == 0x4E && bus->boardinfo.rev > 0x40)
bus->sprom.boardflags_lo |= B43_BFL_PACTRL;
/* Handle case when gain is not set in sprom */
if (bus->sprom.antenna_gain_a == 0xFF)
bus->sprom.antenna_gain_a = 2;
if (bus->sprom.antenna_gain_bg == 0xFF)
bus->sprom.antenna_gain_bg = 2;
/* Convert Antennagain values to Q5.2 */
bus->sprom.antenna_gain_a <<= 2;
bus->sprom.antenna_gain_bg <<= 2;
}
static void b43_wireless_exit(struct ssb_device *dev, struct b43_wl *wl)
{
struct ieee80211_hw *hw = wl->hw;
ssb_set_devtypedata(dev, NULL);
ieee80211_free_hw(hw);
}
static int b43_wireless_init(struct ssb_device *dev)
{
struct ssb_sprom *sprom = &dev->bus->sprom;
struct ieee80211_hw *hw;
struct b43_wl *wl;
int err = -ENOMEM;
b43_sprom_fixup(dev->bus);
hw = ieee80211_alloc_hw(sizeof(*wl), &b43_hw_ops);
if (!hw) {
b43err(NULL, "Could not allocate ieee80211 device\n");
goto out;
}
/* fill hw info */
hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
IEEE80211_HW_RX_INCLUDES_FCS;
hw->max_signal = 100;
hw->max_rssi = -110;
hw->max_noise = -110;
hw->queues = 1; /* FIXME: hardware has more queues */
SET_IEEE80211_DEV(hw, dev->dev);
if (is_valid_ether_addr(sprom->et1mac))
SET_IEEE80211_PERM_ADDR(hw, sprom->et1mac);
else
SET_IEEE80211_PERM_ADDR(hw, sprom->il0mac);
/* Get and initialize struct b43_wl */
wl = hw_to_b43_wl(hw);
memset(wl, 0, sizeof(*wl));
wl->hw = hw;
spin_lock_init(&wl->irq_lock);
spin_lock_init(&wl->leds_lock);
mutex_init(&wl->mutex);
INIT_LIST_HEAD(&wl->devlist);
ssb_set_devtypedata(dev, wl);
b43info(wl, "Broadcom %04X WLAN found\n", dev->bus->chip_id);
err = 0;
out:
return err;
}
static int b43_probe(struct ssb_device *dev, const struct ssb_device_id *id)
{
struct b43_wl *wl;
int err;
int first = 0;
wl = ssb_get_devtypedata(dev);
if (!wl) {
/* Probing the first core. Must setup common struct b43_wl */
first = 1;
err = b43_wireless_init(dev);
if (err)
goto out;
wl = ssb_get_devtypedata(dev);
B43_WARN_ON(!wl);
}
err = b43_one_core_attach(dev, wl);
if (err)
goto err_wireless_exit;
if (first) {
err = ieee80211_register_hw(wl->hw);
if (err)
goto err_one_core_detach;
}
out:
return err;
err_one_core_detach:
b43_one_core_detach(dev);
err_wireless_exit:
if (first)
b43_wireless_exit(dev, wl);
return err;
}
static void b43_remove(struct ssb_device *dev)
{
struct b43_wl *wl = ssb_get_devtypedata(dev);
struct b43_wldev *wldev = ssb_get_drvdata(dev);
B43_WARN_ON(!wl);
if (wl->current_dev == wldev)
ieee80211_unregister_hw(wl->hw);
b43_one_core_detach(dev);
if (list_empty(&wl->devlist)) {
/* Last core on the chip unregistered.
* We can destroy common struct b43_wl.
*/
b43_wireless_exit(dev, wl);
}
}
/* Perform a hardware reset. This can be called from any context. */
void b43_controller_restart(struct b43_wldev *dev, const char *reason)
{
/* Must avoid requeueing, if we are in shutdown. */
if (b43_status(dev) < B43_STAT_INITIALIZED)
return;
b43info(dev->wl, "Controller RESET (%s) ...\n", reason);
queue_work(dev->wl->hw->workqueue, &dev->restart_work);
}
#ifdef CONFIG_PM
static int b43_suspend(struct ssb_device *dev, pm_message_t state)
{
struct b43_wldev *wldev = ssb_get_drvdata(dev);
struct b43_wl *wl = wldev->wl;
b43dbg(wl, "Suspending...\n");
mutex_lock(&wl->mutex);
wldev->suspend_init_status = b43_status(wldev);
if (wldev->suspend_init_status >= B43_STAT_STARTED)
b43_wireless_core_stop(wldev);
if (wldev->suspend_init_status >= B43_STAT_INITIALIZED)
b43_wireless_core_exit(wldev);
mutex_unlock(&wl->mutex);
b43dbg(wl, "Device suspended.\n");
return 0;
}
static int b43_resume(struct ssb_device *dev)
{
struct b43_wldev *wldev = ssb_get_drvdata(dev);
struct b43_wl *wl = wldev->wl;
int err = 0;
b43dbg(wl, "Resuming...\n");
mutex_lock(&wl->mutex);
if (wldev->suspend_init_status >= B43_STAT_INITIALIZED) {
err = b43_wireless_core_init(wldev);
if (err) {
b43err(wl, "Resume failed at core init\n");
goto out;
}
}
if (wldev->suspend_init_status >= B43_STAT_STARTED) {
err = b43_wireless_core_start(wldev);
if (err) {
b43_wireless_core_exit(wldev);
b43err(wl, "Resume failed at core start\n");
goto out;
}
}
mutex_unlock(&wl->mutex);
b43dbg(wl, "Device resumed.\n");
out:
return err;
}
#else /* CONFIG_PM */
# define b43_suspend NULL
# define b43_resume NULL
#endif /* CONFIG_PM */
static struct ssb_driver b43_ssb_driver = {
.name = KBUILD_MODNAME,
.id_table = b43_ssb_tbl,
.probe = b43_probe,
.remove = b43_remove,
.suspend = b43_suspend,
.resume = b43_resume,
};
static int __init b43_init(void)
{
int err;
b43_debugfs_init();
err = b43_pcmcia_init();
if (err)
goto err_dfs_exit;
err = ssb_driver_register(&b43_ssb_driver);
if (err)
goto err_pcmcia_exit;
return err;
err_pcmcia_exit:
b43_pcmcia_exit();
err_dfs_exit:
b43_debugfs_exit();
return err;
}
static void __exit b43_exit(void)
{
ssb_driver_unregister(&b43_ssb_driver);
b43_pcmcia_exit();
b43_debugfs_exit();
}
module_init(b43_init)
module_exit(b43_exit)
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